Post on 31-Dec-2020
Solving Trig Equations Do ##1-15 odds, 33
Answer Key:
Worksheet on Solving Trig Equations
Solve each equation for 0° ≤ x < 360°.
1. 2.
3. 4.
5. 6.
Solve each equation for 0 ≤ x < 2π. 7. 8.
9. 10.
11. 12.
Answer Key:
1. 7. 11.
2. 8. 12.
3. 9.
4. 10.
5. 6.
3tan x + 2 3 = 8 3 − 3tan x 3cos x – 6 3 = cos x – 5 3
2cos x − 1 = sec x 1+ cos x = 3+ 4cos x2
10cos2 x + 3sin x − 9 = 0 3cos2 x − 8cos x − 3 = 0
cscθ + 1 = 2sinθ 4 cos2x = 5 − 4 sinx
cot x = cot x sin2 x 3cos2x − 2cos2 x − 5 = 2cos2 x − 7
sin2x sin x = cos x 2sin x + cot x = csc x
60°,240° 7π6,11π6,π2
π2,3π2,π4,3π4,5π4,7π4
30°,330° π6,5π6
0, 2π3,4π3
0°,120°,240° π2,3π2
120°,240° π4,3π4,5π4,7π4
30°,150°,191.5°,348.5°109.5°,250.5°