Question

cos² 45° + sin² 30°​

Answer 1

Answer:

3/4

Step-by-step explanation:

cos 45 = 1/ root 2

sin 30 = 1/2

cos^2 45 + sin ^2 45

= (1/ root 2)^2 + (1/2)^2

= 1/2 + 1/4

= 2/4 + 1/4

= 3/4

Answer 2

Step-by-step explanation:

(1/√2) ^2 + 1/2

1/2+1/2

1+1/2

2/2

1