Questions
The angle of elevation of the summit of a mountain from a point on the ground is 45°. After climbing up one km towards the summit at an inclination of 30° from the ground, the angle of elevation of the summit is found to be 60°. Then the height (in km) of the summit from the ground is:
detailed solution
Correct option is A
In ΔBCDCDS in B=BCSinD∣ ⇒1Sin15°=BCSin150°⇒BC=23-1 In ΔABC,Sin45°=ABBC⇒AB=23-1·12=13-1Talk to our academic expert!
Similar Questions
The angle of elevation of top of an unfinished tower at a point distance 120m from its base is 450. How much height must the tower be raise so that angle of elevation of top at the same point to be 600.
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