Evaluate sin^2 (pi/4) + cos^2(pi/4) + cos.

The answer of [tex]sin^2 (pi/4) + cos^2 (pi/4)[/tex] is √ 2
Step-by-step explanation:
The value of [tex]sin^2 (pi/4)[/tex] = √2/ 2
The value of [tex]cos^2 (pi/4)[/tex] = √2/ 2
= √2/ 2 + √2/ 2
= √2 + √2 / 2
= 2 √2 / 2
Dividing √2 by 1
= √2