The angle of depression of a point situa...

The angle of depression of a point situated at a distance of 70 metres from the base of a tower is `45^@`. The height of the tower is

70 m

`70 sqrt(2)` m

`(70)/(sqrt(2))` m

35 m

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The angle of depression of a point situated at a distance of 70m from the base of a tower is 60^(@). The height of the tower is (a) 35sqrt(3)m (b) 70sqrt(3)m(c)(70sqrt(3))/(3)m(d)70m

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A tower subtends an angle alpha at a point A in the plane of its base and the angle of depression of the foot of the tower at a point b metres just above A is beta .Prove that the height of the tower is b tan alpha cot beta .

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ARIHANT PUBLICATION BIHAR-BIHAR POLYTECHNIC ENTRANCE EXAM (MODEL SOLVED PAPER 2018)-SECTION III MATHMEATICS

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