# Thread: Values of the function

1. ## Values of the function

Can you help me find the values of sin,cos & tan of $(\frac{1}{3} \pi)$ and $(\frac{1}{6} \pi)$ to find exact values of:

- $sin (\frac{1}{6} \pi)$

- $cos (\frac{5}{3} \pi)$

- $tan (\frac{4}{3} \pi)$

Thank you

Can you help me find the values of sin,cos & tan of $(\frac{1}{3} \pi)$ and $(\frac{1}{6} \pi)$ to find exact values of:

- $sin (\frac{1}{6} \pi)$

- $cos (\frac{5}{3} \pi)$

- $tan (\frac{4}{3} \pi)$

Thank you
Think about a 90-60-30 right triangle for the first problem.
What is the side measurement opposite of the angle pi/6(30 degrees)?

For second problem, it is in the fourth quadrant. Draw a right triangle in the fourth quadrant and you will see the answer.

Same for number three but its in the third quadrant.

3. Gosh - i'm going to need to look this stuff up again to remember the rules?

Any other pointers?