Question

root over 1- sin square x= what is the answer ?

Answer 1

root(1-sin^2x)

sin^2x+cos^2x = 1...... 1-sin^2x=cos^2x

root(1-sin^2x) = root(cos^2x) = cos x

Answer 2

square root of a positive value must be a positive
so modulus cosx