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## If A = 60° and B = 30° verify that tan(A-B) = (tanA – tanB)/(1 + tanA tanB)

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This is the basic and conceptual question from trigonometric ratios in which we have given A = 60° and B ...Read more

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## Evaluate: (5cos^2 60° + 4sec^2 30° – tan^2 45°)/(sin^2 30° + cos^2 30°)

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This is the basic and conceptual question from trigonometric ratios in which we have been asked to calculate the value ...Read more

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## If tan θ =20/21, show that (1-sinθ+cosθ) /(1+sinθ+cosθ)= 3/7

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This is the basic and conceptual question from trigonometric ratios in which we have to prove that  (1-sinθ+cosθ) /(1+sinθ+cosθ)= 3/7, ...Read more

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## From the point on a bridge across a river, the angles of depressions of the banks on opposite sides of the river are 30 ∘ and 45 ∘ , respectively. If the bridge is at a height of 2.5 m from the banks, find the width of the river.

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One of the basic question from trigonometry (height and distance) in which we have been asked to find the width ...Read more

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## From the top of tower, 100 m high, a man observes two cars on the opposite sides of the tower with the angles of depression 30° & 45°respectively. Find the distance between the cars. (Use √3 = 1.73)

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This is the basic and conceptual question from trigonometry in which we have been asked to find the distance between ...Read more

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## The angle of elevation of the top of an unfinished tower at a distance of 75 m from its base is 30° . How much higher must the tower be raised so that the angle of elevation of its top at the same point may be 60°?

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We have a question from trigonometry in which we have to find the length of tower must be raised so ...Read more

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## A child puts one five rupee coin her saving in the piggy bank on the first day. She increases her saving by one five rupee-coin daily. If the piggy bank can hold 190 coins of five rupees in all, find the number of days she continue to put the five rupee coins into it and find the total money she saved.

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Sir please give me a detailed solution of this question from arithmetic progression chapter in which we have been asked ...Read more

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## A contract on construction job specifies a penalty for delay of completion beyond a certain date as follows: Rs. 200 for the first day, Rs. 250 for the second day, Rs. 300 for the third day, etc., the penalty for each succeeding day being Rs. 50 more than for the preceding day. How much money the contractor has to pay as penalty, if he has delayed the work by 30 days

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This is the question of arithmetic progression chapter in which we are to calculate the amount of money the contractor ...Read more