Trigonometrymedium · Past Paper
A flagstaff of 5 m height stands on a tower. From ground, elevations of top and bottom of flagstaff are 60° and 45°. Tower height?
A5/(√3-1) m
B5√3 m
C10 m
D5(√3+1) m
✓ Correct Answer: A — 5/(√3-1) m
h/tan 45 = (h+5)/tan 60. h = (h+5)/√3. h√3 - h = 5. h = 5/(√3-1).
Share this question