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Question 1
The angle of elevation of the top of a tower from a point on the ground, which is 30 m away from the foot of the tower, is 30°. Find the height of the tower.
Question 2
The angles of elevation of the top of an incomplete vertical pillar at a horizontal distance of 100 m from its base is 45 °. If the angle of elevation of the top of complete pillar at the same point is 60 °, then the height of the incomplete pillar is to be increased by
Question 3
The angle of elevations of top and bottom of a cliff standing on a pole, from a point on the ground at a distance of 50 m from the base of the pole, are 450 and 300 respectively. The height of the cliff face (in m) is
Question 4
When the angle of elevation of the sun increases from 30° to 60°, the shadow of a post is diminished by 5 metres. Then the height of the post is?
Question 5
If 
, then find the value of acosθ - bsinθ
, then find the value of acosθ - bsinθQuestion 6
If the sum and difference of two angles are 1350and 
respectively, then the Value of the angles in degree measure are
respectively, then the Value of the angles in degree measure are Question 7
If x2+y2 + xy = 7 and x4 +x2y2+ y4 = 21 then find the value of 1/x2 + 1/y2
Question 8
If cos(θ - 2°) = sin(3θ), where 3θ and (θ - 2°) are acute angles, what is the value of θ?
Question 9
What is the value of 5 (cos61° cos62° cos63°………………………………cos98° cos99° cos100°)
Question 10
Value of (tan 1o tan2o tan3o ….. tan 89o) is
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Aug 5SSC & Railway
