### Home > A2C > Chapter 12 > Lesson 12.3.1 > Problem 12-125

12-125.

Give the exact value(s) for each of the unknowns (0 *≤* *θ* < 2*π*) in the equations below.

Use the unit circle.

See part (a).

Where on the unit circle does sinθ = cosθ?

See part (c).

12-125.

Give the exact value(s) for each of the unknowns (0 *≤* *θ* < 2*π*) in the equations below.

Use the unit circle.

See part (a).

Where on the unit circle does sinθ = cosθ?

See part (c).