Trigonometryeasy · Past Paper
If cos θ = 1, then θ is:
A0°
B30°
C45°
D90°
✓ Correct Answer: A — 0°
The cosine of 0 degrees is 1 because the base equals the hypotenuse.
Share this question
More from Trigonometry
- If cos A + cos^2 A = 1, then sin^2 A + sin^4 A = ?
- If tan(A) = 1, then A is:
- The angle of elevation of a stationary helicopter from a point is 60°. After rising 100 m vertically, the angle of depression of the point is 45°. Find the original height.
- What is sin(90 - theta) equal to?
- If a pole of height h is at the center of a square of side 'a', and θ is elevation of its top from a corner, then: