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# Class - X Subject- Mathematics Chapter-Introduction to Trigonometry Assignment

Rahul S
16/04/2018 0 0
1. If sinα =3/2, find the value of all T- ratios of α
2. If cosα =7/25, find the value of all T-ratios of α
3. If tanα =15/8, find the values of all T-ratios of α
4. If cotα = 2 find all the values of all T-ratios of α
5. If cosecα = √10, find all the values of all T-ratios of α.
6. If sin θ = find all the values of all T-ratios of θ
7. If 15 cot A = 8 find all the values of sin A and sec A
8. If cos θ=0.6 show that (5sin θ - 3tan θ) = 0
9. In a right triangle ABC, right-angled at B, if tan A = 1, then verify that 2 sin A cos A = 1
10. If 8 tan A = 15, find sin A – cos A.
11. In Δ PQR, right-angled at Q, PR + QR = 25 cm and PQ = 5 cm. Determine the values of sin P, cos P and tan P
12. In triangle ABC, right-angled at B tanA =1/√3 , find the value of    i) sinAcosC+cosAsinC
13. If ∠ A and ∠ B are acute angles such that tan A= Tan B then prove that ∠ A =∠B
14. If ∠ A and ∠ B are acute angles such that cos A= cos B then prove that ∠ A =∠B
15. If ∠ A and ∠ B are acute angles such that sin A= sin B then prove that ∠ A =∠B

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