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Class XII Maths Important Questions on Trigonometry
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Question 1
A sphere with centre O sits at top of a pole as shown in the figure. An observer on the ground is at a distance 50m from the foot of the pole. She notes that the angles of elevation from the radius of the sphere in meters is
Question 2
A tower stands at the centre of a circular park. A and B are two points on the boundary of the park such that AB (= a) subtends an angle of 60o at the foot of the tower, and the angle of elevation of the top of the tower from A or B is 30o. The height of the tower is
Question 3
If a, b, c are in GP and log a - log2b, log2b - log3c and log3c - loga are in AP, then a, b, c are the lengths of the sides of a triangle which is
Question 4
The minimum area of the triangle formed by the variable line 3x cosθ + 4y sinθ = 12 and the co-ordinate axes is
Question 5
If in a triangle ABC a cos2 + c cos2 = , then the sides a, b and c
Question 6
In a then:
Question 7
Find the number of solutions.
Question 8
Find.
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Jun 27JEE & BITSAT