Question

What is cos 45º?

O A.
1
2
O B. 7 /
O C. 13
1
O D.
E. 1
0
OF A
F. 3

Answer 1

Answer:√2/2=cos45

√2/2×√2/√2=2/2√2

1/√2

Answer 2

The exact value of cos(45°) is √(2) / 2.

Explanation: