Question

what is the value of cos² 60°​

Answer 1

Answer:

1/4

Step-by-step explanation:

As we know Cos 60° = 1/2

Cos² 60° = (1/2)² = 1/4

Answer 2

Answer:

cos 60=1/2

sec 30=2/√3

tan 45=1

1/2^2=1/4

2/√3^2=4/3

1

1/4 + 4/3 + 1

=31/12