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Trigonometry || 08.02.2021

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Question 1

cosθ + tan θ = 3/2 then find the value of cosec θ.

Question 2

If tanθ +secθ =2 then Find the value of  .

Question 3

Find the value of tan2θ – sec2θ ?

Question 4

If sin2x + cosec2x = 2, find the value of sin8x – cosec6x.

Question 5

If sin (A- B) = sin A cos B ­- Cos A sin B, then sin 15 ° will be

Question 6

The value of (tan 35 º tan 45 º tan 55 º) is

Question 7

Find the square root of the following summation.
152(sin 30° + 2cos2 45° + 3sin 30° + 4cos2 45° +........................+ 17sin 30° + 18cos2 45°)

Question 8

A tower is broken at a point P above the ground. The top of the tower makes an angle 60° with the ground at Q. From another point R on the opposite side of Q angle of elevation of point P is 30°. If QR = 180 m, then what is the total height (in metres) of the tower?

Question 9

If 12 Cosθ + 35 Sinθ = 37 then find the value of tanθ.

Question 10

What is the value of cos(90° - B).sin(C - A) + sin(90° + A).cos (B + C) – sin(90° - C).cos(A + B)?
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