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A

Anurag 10/11/2016 in

What do you mean by projection rule?

Ankit replied | 09/12/2016

Projection Formula gives the relation between angles and sides of a triangle. We can find the length of a side of the triangle if other two sides and corresponding angles are given using projection formula. If a, b and c be the length of sides of a triangle and A, B and C are angles opposite to the sides respectively, then projection formula is given below:
a = b cos C + c cos...  more»
Projection Formula gives the relation between angles and sides of a triangle. We can find the length of a side of the triangle if other two sides and corresponding angles are given using projection formula. If a, b and c be the length of sides of a triangle and A, B and C are angles opposite to the sides respectively, then projection formula is given below:
a = b cos C + c cos B
b = c cos A + a cos C
c = a cos B + b cos A «less

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K

K 10/11/2016 in

What do you mean by Napier’s Analogy?

Ankit replied | 09/12/2016

Definition of Napier's analogies: Four formulas giving the tangent of half the sum or difference of two of the angles or sides of a spherical triangle in terms of the others.

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S

Saravanan 10/11/2016 in

What is the trigonometrical formula of Sin A / 2 for half angle?

Ankit replied | 09/12/2016

2sin(A/4).cos(A/4).

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N

Nagaraj 10/11/2016 in

What is the area of triangle?

Siva replied | 07/12/2016

(height*base)/2.

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B

Bhakti 10/11/2016 in

What is the measurement of side AC of the triangle ABC with right triangle at C?

Sarvajeet replied | 26/11/2016

square of AB = square of AB + square of BC.

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F

Furqankhan 10/11/2016 in

What is the area of triangle ABC if the angle sinA = 2/bc, sin B = 2/ac, sinC = 2/ab?

Sarvajeet replied | 26/11/2016

The area of triangle ABC =(1/2).a.b. sinC=(1/2).b.c. sinA=(1/2).c.a. sinB.

Sarvajeet replied | 02/12/2016

The area of triangle ABC =(1/2).a.b. sinC=(1/2).b.c. sinA=(1/2).c.a. sinB=1.

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L

Laxmi 10/11/2016 in

What is the difference between circumcircle and incircle?

Nirmal Bhasu replied | 06/12/2016

Circumcircle is the circle which passes through the vertices of triangle and Incircle is the circle which touches the sides of triangle.

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S

Soujanya 10/11/2016 in

What do you mean by escribed circle?

Ankit replied | 09/12/2016

Define escribed circle: A circle outside of a triangle that is tangent to one of its sides and also to the other two sides that have been extended.

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N

Natarajan 10/11/2016 in

What is the process for measuring radius of the inscribed and circumscribed circles of regular polygon?

Ankit replied | 09/12/2016

Dist. of centre from vertex will give circum radius. perpendicular dist. of centre from side will give inradius.

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V

Vikas 10/11/2016 in

Name some properties of triangle?

Ankit replied | 09/12/2016

These are some well known properties of all triangles. See the section below for a complete list.
The interior angles of a triangle always add up to 180°.
The exterior angles of a triangle always add up to 360°.

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K

Kartheek 10/11/2016 in

What do you mean by Appollonius theorem?

Prateek replied | 19/11/2016

The sum of the squares of any two sides of any triangle equals twice the square on half the third side, together with twice the square on the median bisecting the third side.

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S

Siraj 10/11/2016 in

Define ptolemy’s theorem?

Ankit replied | 09/12/2016

In Euclidean geometry, Ptolemy's theorem is a relation between the four sides and two diagonals of a cyclic quadrilateral (a quadrilateral whose vertices lie on a common circle). The theorem is named after the Greek astronomer and mathematician Ptolemy (Claudius Ptolemaeus).

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O

Orange 10/11/2016 in

What is the difference between angle of elevation and angle of depression?

Prassan replied | 08/12/2016

Angle of elevation is used when eye is observing any object above it and angle of depression is used when eye is observing any object below it.

Ankit replied | 09/12/2016

Looking top, Looking bottom.

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V

Vikas 10/11/2016 in

What is the formula for measuring height of a triangle?

Ankit replied | 09/12/2016

The height of a triangle can be found if you have an angles and a side, if the angle is between the base and the side you have, or all three sides. We'll call the sides of the triangle a, b, and c, and the angles, A, B, and C.
If you have all three sides, you'll use Heron's formula, and the formula for the area of a triangle.
If you have two sides and an angle, you'll use...  more»
The height of a triangle can be found if you have an angles and a side, if the angle is between the base and the side you have, or all three sides. We'll call the sides of the triangle a, b, and c, and the angles, A, B, and C.
If you have all three sides, you'll use Heron's formula, and the formula for the area of a triangle.
If you have two sides and an angle, you'll use the formula for the area given two angles and a side. A = 1/2ab(sin C). «less

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P

Puneethkumar 10/11/2016 in

What is the formula for measuring distance from height to hypotenuse of a right triangle?

Veeranna replied | 07/12/2016

Ac2=ab2+bc2.

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V

Veena 10/11/2016 in

What is the difference between acute angle and obtuse angle of a triangle?

Ankit replied | 22/11/2016

An acute triangle is a triangle with all three angles acute (less than 90°). An obtuse triangle is one with one obtuse angle (greater than 90°) and two acute angles. Since a triangle's angles must sum to 180°, no triangle can have more than one obtuse angle.

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A

Abhishek 10/11/2016 in

Solve the triangle if B = 30 degree, C = 60 degree, a = 6 cm?

Sarvajeet replied | 26/11/2016

A =(180- 30-60) degree= 90 degree,
b = 3 cm=AC
c = 3((square root of 3)) cm=AB

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K

Kalpana 10/11/2016 in

What is the measurement of BC of the triangle ABC with acute angle at A?

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P

Poulomi 10/11/2016 in

What is the measurement of angle if it is given tan(A - B / 2) and cot C/2?

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S

Saimon 10/11/2016 in

What is the formula for measuring the value of an acute angle of triangle ABC?

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D

Divya 10/11/2016 in

What is the difference between orthocentre and pedal triangle?

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M

Define m - n theorem for measuring angle in triangle ABC?

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M

Mayur 10/11/2016 in

What is the formula for projection formulae for right triangle ABC?

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R

Raj 10/11/2016 in

What is the value of 2ac[sin 1 / 2(A - B + c)] in right triangle ABC inscribed in a circle?

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A

Anil Sundar 10/11/2016 in

Solve the triangle: Two sides of a triangle are [(square root of 3) - 1] and [(square root of 3) + 1] units and their included angle is 60 degree?

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