Area of a triangle with sine 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.
- 3 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
Find the area of triangle a = 8, b = 5, C = 30°.Type the answer.
2 Question 2
Find the area of triangle a = 10, b = 3, C = 90°.Type the answer.
3 Question 3
Find the area of triangle sides 6 m and 9 m, angle 60° between them.Type the answer.
4 Question 4
Find the area of triangle a = 7, b = 7, C = 60°.Type the answer.
5 Question 5
Find the area of triangle a = 11, b = 8, C = 40°.- A) A ≈ 28.3
- B) A ≈ 283
- C) A ≈ 2.83
6 Question 6
Find the area of triangle b = 14, c = 9, A = 25°.Type the answer.
7 Question 7
Find the area of triangle a = 15, b = 6, C = 65°.- A) A ≈ 408
- B) A ≈ 4.08
- C) A ≈ 40.8
8 Question 8
Find the area of triangle a = 10, b = 4, C = 150°.Type the answer.
9 Question 9
Find the area of triangle a = 13, c = 5, B = 135°.- A) A ≈ 23.0
- B) A ≈ 230
- C) A ≈ 2.3
10 Question 10
Find the area of triangle a = 20, b = 3, C = 100°.Type the answer.