Question

what is (cosA)(cosA) + (sinA)(sinA)=?​

Answer 1

Answer:

1

Explanation :

By Using trigonometric identity,

cos^2 A + sin^2 A = 1

Answer 2

Answer:

CosA × CosA = cos^2 A

SinA × SinA = sin ^2 A

cos ^2 A + sin ^2 A = 1 ( cos^2 theta + sin ^ 2 theta = 1 )