if <span lang="en
if <span lang="en
given, we should find the value for [by using the formulae, sin2θ + cos2θ = 1 and sin2θ = 2 sinθcosθ]as already mentioned in the question, , so x lies in the 1st quadrant and both sine and cosine functions are positive.therefore, sin x + cos x
given, we should find the value for [by using the formulae, sin2θ + cos2θ = 1 and sin2θ = 2 sinθcosθ]as already mentioned in the question, , so x lies in the 1st quadrant and both sine and cosine functions are positive.therefore, sin x + cos x