exact trigonometric values

Question 1

what is the sin of 0, 30, 45, 60, and 90?

Answer 1

SIN:

0 = 0
30 = 1/2
45 = √2/2
60 = √3/2
90 = 1

Question 2

what is the cos of 0, 30, 45, 60, and 90?

Answer 2

COS:

0 = 1
30 = √3/2
45 = √2/2
60 = 1/2
90 = 0

Question 3

what is the tan of 0, 30, 45, 60, and 90?

Answer 3

TAN:

0 = 0
30 = √3/3
45 = 1
60 = √3
90 = undefined