Question

solve this sum of trigonometry​

Answer 1

Answer:

i think if u will put the value of theta u can slve it

Answer 2

Step-by-step explanation:

see I am not solving but I ll tell u the way...

first write cos theta sin theta cubs like this....(cost theta+sin theta)(costheta +sin theta)(costheta +sin theta)...then 1 )(costheta +sin theta) will be cancelled from above .....apply the formula of a^2+b^2 and a^2-b^2