" (14) "[" y "cos A+cos^(2)A=1" prove that "],[sin^(2)A+cin^(4)A=1]

If cosA+cos^(2)A=1 , then prove that sin^(2)A+sin^(4)A=1 .

If cosA+cos^(2)A=1 , then prove that sin^(2)A+sin^(4)A=1 .

If (cos^(4)A)/(cos^(2)B)+(sin^(4)A)/(sin^(2)B)=1 then prove that (i)sin^(2)A+sin^(2)B=2sin^(2)A sin^(2)B(ii)(cos^(4)B)/(cos^(2)A)+(sin^(4)B)/(sin^(2)A)=1

If sin theta+sin^(2)theta=1 Prove that cos^(2)theta+cos^(4)theta=1

If sin A + sin^(2)A + sin^(3)A =1 , then , prove that cos^(6) A - 4 cos^(4) A + 8 cos^(2) A =4 .

Prove that : cos^(4) A - sin^(4) A = 2 cos^(2) A - 1

Prove that : 2 sin^(2) A + cos^(4) A = 1 + sin^(4) A

If sin ^ (- 1) x + sin ^ (- 1) y = (pi) / (2), then prove that sin ^ (- 1) x = cos ^ (- 1) y

If (cos ^ (4) x) / (cos ^ (2) y) + (sin ^ (4) x) / (sin ^ (2) y) = 1 then prove that (cos ^ (4) y) / (cos ^ (2) x) + (sin ^ (4) y) / (sin ^ (2) x) = 1

If cos^(-1)x+cos^(-1)y=pi/2 then prove that cos^(-1)x=sin^(-1)y