Using find (i) 1 (ii) (iii) (iv)

Question

Philoid · Accepted Answer

(i) Using Identity

In the given expression

On substituting these values in the above identity, we get

=

(ii) Using Identity

In the given expression

On substituting these values in the above identity, we get

=

(iii) Using Identity

In the given expression

On substituting these values in the above identity, we get

=

(iv) Using Identity

In the given expression

On substituting these values in the above identity, we get

=