Trigonometry questions
Right-triangle side problems and exact special-angle values.
Covers right triangle trigonometry, the Pythagorean theorem, and exact sin, cos, and tan values at the standard special angles: 0, 30, 45, 60, and 90 degrees.
Get started with trigonometry
Sample Trigonometry questions
1. Find the exact value of cos(45°).+
Answer: √2/2
Step 1: cos(45°) is one of the standard special-angle values. Step 2: cos(45°) = √2/2.
2. Find the exact value of tan(0°).+
Answer: 0
Step 1: tan(0°) is one of the standard special-angle values. Step 2: tan(0°) = 0.
3. Find the exact value of cos(30°).+
Answer: √3/2
Step 1: cos(30°) is one of the standard special-angle values. Step 2: cos(30°) = √3/2.
4. Find the exact value of tan(30°).+
Answer: √3/3
Step 1: tan(30°) is one of the standard special-angle values. Step 2: tan(30°) = √3/3.
5. Find the exact value of sin(45°).+
Answer: √2/2
Step 1: sin(45°) is one of the standard special-angle values. Step 2: sin(45°) = √2/2.
6. Find the exact value of cos(60°).+
Answer: 1/2
Step 1: cos(60°) is one of the standard special-angle values. Step 2: cos(60°) = 1/2.