Quiz

Question 1 · easy

A right triangle has legs 8 and 15. Find sin of the angle opposite the leg of length 8.

Question 2 · easy

Find tan(30°) without a calculator.

Question 3 · easy

Find the reference angle for 295°.

Question 4 · medium

Find cos(120°) using reference angles.

Question 5 · medium

If sin(θ) = 0.6 and θ is in Quadrant II, find cos(θ).

Question 6 · medium

Solve: angle B=62°, leg b (opposite B) = 20. Find the hypotenuse.

Question 7 · medium

A ramp rises 3 feet over a horizontal distance of 20 feet. Find the angle of inclination.

Question 8 · easy

In which quadrant is cos negative and sin positive?

Question 9 · easy

Find sin^2(65°) + cos^2(65°).

Question 10 · medium

A tree is observed at 40° elevation from 30 m away. Find its height.