Hello, redpanda11!

Recall that an inverse trig function is ana) Evaluate: .angle.

Let:

is in a right triangle with:

Using Pythagorus, we find that: .

Then: .

Therefore, we have: .

b) Solve the pair of equations: and . for

Cosine is negative in Quadrants 2 and 3.

Tangent is positive in Quadrants 1 and 3.

. . Hence, is in Quadrant 3.

Multiply the two equations: .

Then we have: .

Therefore: .