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Lesson Posted on 09 Jun Trigonometry

Unit Circle With Diameter = 1

DhanushDhari M.

Former faculty member of IIT, Kharagpur and ISM, Dhanbad.

Unit Circle For Advanced Trigonometry Important: Please draw the circles and lines as directed as you...

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Answered on 07/12/2016 Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Mathematics Trigonometry

If tan x = m / m + 1, tan y = 1/2m +1 then what is the value of x + y?

Sreedevi A.

Entusiastic Teacher

45 degrees.

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Answered on 02/12/2016 Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Mathematics Trigonometry

If tan x = a/b, then what is the value of (b cos 2x + a sin 2x)?

Sarvajeet Kumar

An Experienced Trainer

b

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Answered on 03/12/2016 Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Mathematics Trigonometry

If a cos x + b sin x = m and a sin x - b cos x = n, show that (square of a) + (square of b) = (square...

Gunturi Praveen

Maths & Electronics

Square the two equations and add. Apply the Pythagorean trigonometric Identity.

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Answered on 03/12/2016 Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Mathematics Trigonometry

If sin x + cos x = 1, then what is the value of sin 2x?

Sarvajeet Kumar

An Experienced Trainer

0

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Answered on 19/11/2016 Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Mathematics Trigonometry

What is the value of sin 50 / sin 130?

Richa Kumari

1

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Answered on 28/11/2016 Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Mathematics Trigonometry

If tan x = 1/2 and tan y = 1/3, then what is the value of x + y?

Tapas Bhattacharya

Tutor

tan(x + y) = [tan x + tan y] / [1 - (tan x)(tan y)] = [(1/2) + (1/3)] / [1 - (1/2)(1/3)] = 1 = tan (pi/4) So,...

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Answered on 19/11/2016 Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Mathematics Trigonometry

What is the value of sin 45+ cosec 45?

Richa Kumari

3?2 /2=2.1213

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Answered on 02/12/2016 Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Mathematics Trigonometry

What is the value of sin(45 + x) - cos(45 - x)?

Sarvajeet Kumar

An Experienced Trainer

0

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Answered on 19/11/2016 Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Mathematics Trigonometry

What is the value of cos 45 + sin 90?

Richa Kumari

1.7071

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