Solving Trig Equations TEST REVIEW

Double or More

100

Angles satisfying the equation sin2x = 2sinx + 2sin2x

0, 180

200

Angles that satisfy the equation 6 sin²x - 3 = -2cos2x

45, 135, 225, 315

300

Angles that satisfy the equation 0 = 2 - 4sin²x - cos2x

45, 135, 225, 315

400

Angles satisfying the equation -sin2x - cosx = -3cosx

90, 270

500

Angles satisfying the equation 3sin2x = sqrt(2)sinx + 4sin2x

0, 135, 180, 225

Give it a TRI

100

Angles satisfying sin²x-2sinx-3=0.

What is 270?

200

Angles satisfying 4cos²x+1=4cosx.

What are 60 and 300?

300

Angles satisfying 2cos²x-cosx-1=0.

What are 120, 240 and 0?

400

Angles satisfying csc²-2=-cscx.

What are 210, 330 and 90?

500

Angles satisfying 2sin²x+7sinx=4.

What are 30 and 150?

Common factors

100

Angles satisfying sin²x-sinx=0.

What are 0, 90 and 180?

200

Angles satisfying tan²x-sqrt(3)tanx=0.

What are 0, 180, 60 and 240?

300

Angles satisfying 2cos²x=-cosx.

What are 90, 270, 120 and 240?

400

Angles satisfying cosxcsc²x = 2cosx.

What are 90, 270, 45, 135, 225, and 315?

500

Angles satisfying 4sin³x=3sinx.

What are 0, 180, 60, 120, 240 and 300?

Sum Difference

100

Find the exact value of cos 165

(-sqrt 6 - sqrt 2)/4

200

Find the exact value of sin 285

(-sqrt 6 - sqrt 2)/4

300

Find the exact value of cos 255

(sqrt 2 - sqrt 6)/4

400

Find the exact value of tan 165

(sqrt 3) - 2

500

Find the exact value of tan -75

-2 - (sqrt 3)

Substituting

100

Angles satisfying cscx - sinx = 0.

What are 90 and 270?

200

Angles satisfying 3sin²x - cos²x = 0.

What are 30, 150, 210 and 330?

300

Angles satisfying 2cos²x = sinx + 1.

What are 30, 150 and 270?

400

Angles satisfying 4tan²x + 4secx = -4.

What is 180?

500

Angles satisfying sqrt(3)cotxsinx + 2cos²x=0.

What are 90, 270, 150 and 330?