The angle of depression of a point on the ground as seen from the top of a tower, 35 feet high, is 45°. Find the distance of the point on the ground from the foot of the tower.
Let θ be the angle of depression of the point on the ground as seen from the top of a tower, here θ = 45° Let AC be the height of the tower, here AC = 35 feet. Let the distance of the point on the ground from the foot of the tower, AB = x feet. Here, tan θ = AC/AB ⇒ tan 45° = 35/x ⇒ 1 = 35/x ⇒ x = 35 feet
‘Petechiae’ is caused by a deficiency of which one of the following vitamins?
Which protein is responsible for elasticity of wheat dough?
Diseases caused by consumption of certain proteins from Leguminosae and Euphorbiaceae families causing clumping of red blood cells are:
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