# NCERT Class 10 Mathematics Trigonometry Proof Questions CBSE Board Sample Problems

Doorsteptutor material for CBSE is prepared by world's top subject experts: fully solved questions with step-by-step explanation- practice your way to success.

Question 1.

Given

then prove that

Question 2.

Prove the following trigonometric identities:

a)

b)

c)

d)

e)

Question 3.

If A, B, C are interior angles of, show that

Question 4.

Prove the following identities, where the angles involved are acute angles for which the expressions are defined.

a)

b)

c)

Question 5.

If and , prove that

Question 6.

Prove the following identities:

(i)

(ii)

(iii)

Question 7.

If , then show that

Question 8.

If and , then show that

Question 9.

Prove that

Question 10.

Prove that