Question

Write down the exact value of: a) cos 90 b) sin 90 c) tan 0

Answer 1

Answer:

$\cos(90) = 0 \\ \sin(90) = 1 \\ \tan(0) = 0$

Answer 2

Answer:

The exact value of

cos90 is 0

sin90 is 1

tan90 is indeterminate.