Question

Please Help...

Answer 1

\[SIn ^{2} \frac{ \theta }{ 2 } + Cos ^{2} \frac{ \theta }{ 2 } = ?\]

Answer 2

theta /2 is just any angle

do you recognise the identity

sin^2 x + cos^2 x = ???

Answer 3

If there is (theta/2) instead of theta then its also equal to 1??

Answer 4

yes - because the identity is true for any angle

Answer 5

Okay Sir Thank You..... Stay Blessed....