Please help me prove the identity

Step-by-step explanation:

Let , we proceed to prove the given identity by trigonometric and algebraic means:

1) Given

2) /

3) Commutative, associative and distributive properties/

4)

5) Distributive and associative properties.

6) Existence of multiplicative inverse/Commutative and modulative properties.

7)

8)

9) Existence of multiplicative inverse///Result

c. (3,2,6) is the answer.

step-by-step explanation:

the shape,the size and the distance