### Home > CCA2 > Chapter 9 > Lesson 9.1.1 > Problem 9-11

9-11.

Solve each equation for

sin

Where is the sin

? Remember sin is the-value. What wouldbe at those places?

cos

Where is the cos

? Remember cos is the-value. What wouldbe at those places?

tan Solve for the tan

. Draw a unit circle. Where is the tanof that value?

sin ^{^2}Use your calculator to get one of the values. Then use symmetry to get the other

values. There are values because when you take the square root of both sides the answer would be plus or minus!