3. `(sin theta - cos theta)^2+(sin theta + costheta)^2` =? a) 0 b)1 c)4 d)2

(1+sin 2theta+cos 2theta)/(1+sin2 theta-cos 2 theta) =

(1+sin2theta+cos2theta)/(1+sin2theta-cos2theta)=?

What is the value of (tan theta cosec theta)^(2)-(sin theta sec theta)^(2) (a) -1 (b) 0 (c) 1 (d) 2

int (d theta)/((sin theta - 2 cos theta)(2 sin theta + cos theta))

2(sin^(6) theta + cos^(6)theta) - 3(sin^(4)theta + cos^(4)theta)+ 1 = 0

Prove : (1+sin2theta-cos2theta)/(1+sin2theta+cos2theta)=tantheta

2(sin^6theta+cos^6theta)-3(sin^4theta+cos^4theta) is equal to 0 (b) 1 (c) -1 (d) None of these

2(sin^6theta+cos^6theta)-3(sin^4theta+cos^4theta) is equal to (a) 0 (b) 1 (c) -1 (d) None of these

(sin theta + sin 2 theta)/( 1 + cos theta + cos 2 theta) = tan theta.

If f (theta) = [[cos^(2) theta , cos theta sin theta,-sin theta],[cos theta sin theta , sin^(2) theta , cos theta ],[sin theta ,-cos theta , 0]] ,then f ( pi / 7) is