Question

Solve the equation on the interval 0 ≤  θ < 2π.

3√2 cos θ + 2 = - 1

Answer 1

Step 1:

The equation is and the interval is .

The general solution of is .

Step 2:

Consider .

then and

Consider .

then and

and

Solutions of in the interval are and .

Solution:

Solutions of in the interval are and .