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If 4 tan theta = 3, evaluate frac(4 sin ...

If `4 tan theta` = 3, evaluate `frac(4 sin theta - cos theta + 1)(4 sin theta + cos theta - 1)`

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AGRAWAL PUBLICATION-INTRODUCTION TO TRIGNOMETRY AND ITS APPLICATIONS-EXAMPLE
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  3. If 4 tan theta = 3, evaluate frac(4 sin theta - cos theta + 1)(4 sin t...

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  4. A player sitting on the top of a tower of height 20 m observes the ang...

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  5. Using the formula cos 2 theta = 2 cos^2 theta - 1, find the value of c...

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  6. If sinθ+ cosθ= sqrt 3, then prove tanθ + cotθ= 1.

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  7. Prove that following identity: (cos A)/(1 + sin A) + (1 + sin A)/(cos ...

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  8. Prove that sec^(2) theta + "cosec"^(2) theta = sec^(2) theta "cosec"^(...

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  9. If 2 sin^2 theta - cos^2 theta = 2, find the value of theta.

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  10. The shadow of a tower standing on a level plane is found to be 50 m lo...

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  11. From a window, 15 m high above the ground, the angles of elevation and...

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  12. A moving boat is observed from the top of a 150 m high cliff moving aw...

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  13. An observer 1.5 m tall is 20 sqrt 3 m away from a chimney. The angle o...

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  14. Two men on either side of a tower 75 m high observe the angle of eleva...

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  15. The angles of depression of the top and bottom of a 50 m high building...

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