Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 16 - Height and Distance>Target Exercise>Q 9

HARD

Stage 1 & 2

IMPORTANT

Earn 100

A man standing on the lighthouse observes the angle of elevation of a boat coming towards the lighthouse to be $60 °$ from $30 °$ in $15 \min$ . How much time will the boat take to reach the foot of the lighthouse?

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Important Questions on Height and Distance

MEDIUM

Stage 1 & 2

IMPORTANT

Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 16 - Height and Distance>Target Exercise>Q 10

A

50 m

high pole which is above a

250 m

high building observed by an observer standing at a height of

300 m

. If the top of the building and the top of the pole subtends equal angle i.e.,

θ

at the observer, then the horizontal distance of the observer from the pole is