Question

cos ^2 30 + sin ^2 45 -1/3 tan^260+cos 90​

Answer 1

Answer:

-1

PLEASE MARK ME BRAINLIEST

Step-by-step explanation:

cos2 30 = (^2root3/ 2)=3/4

sin2 45 = 1/4

tan2 60 =3

cos 90 = 1

3/4+1/4-3+1

(3+1)/4-3+1

1+1-3

=-1