`sin(90-A)=1/2`, then A=………….

If sin(90-theta)=1/(sqrt(2)) then the value of theta is ..

If sin^(4)A-cos^(4)A=1,then (A//2) is ______. (0ltAle90^(@)) .

If x in (45^(@),90^(@)), sin2x=1/2 , then sin^(3)x-3/4 sinx=

What is the value of [1 - sin(90 -2A)|//[1 + sin (90 + 2A)] ? [1 - sin(90 -2A)|//[1 + sin (90 + 2A)] का मान क्या है?

Prove that : (1)/ (1 + sin (90^(@) - A)) + (1)/ (1 - sin (90^(@) - A)) = 2 sec^(2) (90^(@) - A)

Prove that : (i) sinthetacos(90^(@)-theta)+sin(90^(@)-theta)costheta=1 (ii) sectheta" cosec"(90^(@)-theta)-tanthetacot(90^(@)-theta)=1 (iii) (sintheta*sec(90^(@)-theta)cot(90^(@)-theta))/("cosec"(90^(@)-theta)*costheta*tantheta)-(tan(90^(@)-theta))/(cottheta)=0 (iv) (1+sin(90^(@)-theta))/(cos(90^(@)-0))+(cos(90^(@)-theta))/(1+sin(90^(@)-0))=2"cosec"theta

Prove that : (i) sinthetacos(90^(@)-theta)+sin(90^(@)-theta)costheta=1 (ii) sectheta" cosec"(90^(@)-theta)-tanthetacot(90^(@)-theta)=1 (iii) (sintheta*sec(90^(@)-theta)cot(90^(@)-theta))/("cosec"(90^(@)-theta)*costheta*tantheta)-(tan(90^(@)-theta))/(cottheta)=0 (iv) (1+sin(90^(@)-theta))/(cos(90^(@)-0))+(cos(90^(@)-theta))/(1+sin(90^(@)-0))=2"cosec"theta

Prove the following identities: cos theta sin(90o-theta)+sin theta cos(90o-theta)=1sin(sin(90o-theta))/(tan theta)-1=-sin^(2)theta( iii) (sin(90o-theta)cos(90o-theta))/(tan theta)=1-sin^(2)theta

What is the value of [ 1 - sin ( 90 - 2A ) ] // [ 1 + sin ( 90 + 2 A ) ] ?