Question

Evaluate : (sin theta+ cos theta ) ^2 +(cos theta- sin θ)^2 ​

Answer 1

Answer:

2

Step-by-step explanation:

formula { a+b)2 = A2+ 2ab+B2

sintheta^2 + costheta^2 +2sintheta costheta

+cos^2+sin^2-2sintheta costheta

sintheta^2+ costheta^2 +sintheta^2 + costheta^2

(sintheta^2+ costheta^2 =1)

1+1 =2