Question

Please help?????!!!!!

Answer 1

10√2

and this simplifies to a = -----------

2Answer:

Explanation:

The cosine function links the angle (45°), the side a and the hypotenuse (10):

a

cos 45° = ------------

10

1

and so a = 10 cos 45° = 10(------) = 10√2 / 2 = a

√2