If `sinx+sin^2x+sin^3x=1` then find the value of `cos^6x-4cos^4x+8cos^2x`

If sin x+sin^(2)x+sin^(3)x=1 then find the value of cos^(6)x-4cos^(4)x+8cos^(2)x

If sin A+sin^(2)A+sin^(3)A=1, then find the value of cos^(6)A-4cos^(4)A+8cos^(2)A

If sin x+sin^(2)x=1, then find the value of cos^(12)x+3cos^(10)x+3cos^(8)x+cos^(6)x-1

If 2cos x+sin x=1, then find the value of 7cos x+6sin x

If sin x+sin^(2)x=1 then write the value of cos^(8)x+2cos^(6)x+cos^(4)x

If sin x + sin^(2)x = 1 , then what is the value of cos^(8)x + 2 cos^(6)x + cos^(4)x ?

If sin x + sin ^(2) x=1, then the value of cos ^(12) x+3 cos ^(10) x+3 cos ^(8) x + cos ^(6) x-2 is equal to

sin x+sin^(2)x=1, then value of cos^(6)x+cos^(2)x-sin x is

If sinx+sin^2x=1. then evaluate : (i) cos^8x+2cos^6x+cos^4x