Trig equations Quiz
10 questions · easy to harder · Trigonometry · score and step-by-step answers
How it works
- 10 questions, about 30 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 4 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. A calculator is on the screen.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
Solve 2 sin x − 1 = 0- A) x = 30°, 150°
- B) 150°
- C) x = −30°, −150°
- D) x = 30°
2 Question 2
Solve tan x = 1Type the answer.
3 Question 3
Solve cos x = 0- A) 270°
- B) x = 90°, 270°
- C) x = 90°
4 Question 4
Solve 2 cos x + 1 = 0Type the answer.
5 Question 5
Solve 2 sin x = √3- A) 120°
- B) x = 60°
- C) x = 60°, 120°
6 Question 6
Solve 4 sin x − 2 = 0Type the answer.
7 Question 7
Solve 4 cos2 x = 1Type the answer.
8 Question 8
Solve 2 cos x + √3 = 0Type the answer.
9 Question 9
Solve 2 sin x + √3 = 0- A) x = 240°
- B) 300°
- C) x = 240°, 300°
10 Question 10
Solve 2 cos2 x + cos x = 0Type the answer.