Test your understanding of the common trigonometric values for $\sin$, $\cos$, and $\tan$, especially for the special angles:$$0^\circ,\ 30^\circ,\ 45^\circ,\ 60^\circ,\ 90^\circ$$

Try to answer the questions before checking the answers at the bottom of the page.

Question 1

Find sin(30°)

a) 1
b) 1/2
c) √3/2

Question 2

Find cos(60°)

a) 1/2
b) √3/2
c) 0

Question 3

Find tan(45°)

a) 0
b) 1
c) √3

Question 4

Find tan(30°)

a) 1/√3
b) √3
c) 1

Question 5

Find tan(90°)

a) 0
b) 1
c) undefined

Answers

1 → b) 1/2
2 → a) 1/2
3 → b) 1
4 → a) 1/√3
5 → c) undefined

Practice

• More Examples

• Take the Quiz

Navigation

• Back to Trigonometry
• Back to Home