" 12."(tan(90^(@)-theta)cot theta)/(cos ec^(2)theta)-cos^(2)theta=0

(tan(90^@-theta) cot theta)/(cosec^2 theta)-cos^2 theta=0

cot^(4)theta+cot^(2)theta=cos ec^(4)theta-cos ec^(2)theta

Prove the following: (cos(90^(@)-theta)sec(90^(@)-theta)tan theta)/(cos ec(90^(@)-theta)sin(90^(@)-theta)cot(90^(@)-theta))+(tan(90^(@)-theta))/(cot theta)=2

Trigonometric identities (i) cot^(4)(theta)+cot^(2)(theta)=cos ec^(4)(theta)-cos ec^(2)(theta)

If cot theta=sqrt(3), find the value of (cos ec^(2)theta+cot^(2)theta)/(cos ec^(2)theta-sec^(2)theta)

The value of sqrt((1+cos theta)/(1-cos theta)) is (a) cot theta-cos ec theta(b)cos ec theta+cot theta(c)cos ec^(2)theta+cot^(2)theta(d)(cot theta+cos ec theta)^(2)

(tan theta)/(1+cot theta)=(tan theta-1)/(2-cos ec^(2)theta)

Prove that :(sin theta cos(90^(0)-theta)cos theta)/(sin(90^(0)-theta))+(cos theta sin(90^(0)-theta)sin theta)/(cos(90^(@)-theta))=1csc^(2)(90^(@)-theta)-tan^(2)theta=cos^(2)(90^(@)-theta)+cos^(2)theta

What is the value of (tan^(2)theta-sec^(2)theta)/(cot^(2)theta-cos ec^(2)theta)?

tan theta+cot theta=20 then sec^(2)theta xx cos ec^(2)theta