Trigonometryeasy · Past Paper
A ladder 20 m long leans against a wall at 60°. Distance of foot from wall?
A10 m
B10√3 m
C20 m
D5 m
✓ Correct Answer: A — 10 m
cos 60° = d / 20. 1/2 = d / 20, so d = 10 m.
Share this question
More from Trigonometry
- What is the value of sin 2θ if sin θ = 3/5 and cos θ = 4/5?
- If x = a cos theta and y = b sin theta, then b^2 x^2 + a^2 y^2 is equal to:
- Find the value of (sin θ / (1 - cot θ)) + (cos θ / (1 - tan θ)).
- What is the value of cos(90 - theta)?
- If θ is an acute angle in a right-angled triangle, what does cos θ represent?