Question

sin^2 30+cos^60 -sin^2 45​

Answer 1

Answer:

sin^2 30+cos^60 -sin^2 45

(1/2)²+(1/2)-(1/√2)²

1/4+1/2-1/2

1/4

sin^2 30+cos^60 -sin^2 45=1/4