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If cot theta=7/8 , evaluate: ((1+sinth...

If cot `theta=7/8` , evaluate:
`((1+sintheta)(1-sintheta))/((1+costheta)(1-costheta))`

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Given cot theta =(7)/(8) , then evaluate (i) ((1+sin theta )( 1-sin theta ))/( (1+cos theta )(1-cos theta )) " "(ii) ((1+sin theta ))/( cos theta )

If cot theta=7/8 , evaluate: cot^(2)theta

If tantheta=a/b , find the value of (costheta+sintheta)/(costheta-sintheta)

Answer the following by a number or a word or a sentence : If 4tantheta=3, then find the value of (4sintheta-costheta)/(4sintheta+costheta)

Prove the following identities : sqrt((1+sintheta)/(1-sintheta))+sqrt((1-sintheta)/(1+sintheta))=2sectheta

If 21 tan theta= 20 , show that (1-sintheta+costheta)/(1+sintheta+costheta)=3/7

If sectheta=13/5 , show that (2sintheta-3costheta)/(4sintheta-9costheta)=3

Find (dy)/(dx) if x=a(theta-sintheta) and y=a(1-costheta) .

Let f(theta)=sintheta(sintheta+sin3theta). then f(theta)

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KUMAR PRAKASHAN-INTRODUCTION TO TRIGONOMETRY-EXERCISE 8.1
  1. In DeltaABC, right angled at B, AB = 24 cm, BC = 7 cm . Determine : si...

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  2. In DeltaABC, right angled at B, AB = 24 cm, BC = 7 cm. Determine : si...

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  3. In the given figure, find tan P - cot R.

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  4. If sinA=3/4 , calculate cos A and tan A.

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  5. Given 15 cot A = 8, find sin A and sec A.

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  6. Given sectheta=13/12, calculate all other trigonometric ratios.

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  7. If angleA and angleB are acute angles such that cos A = cos B, then s...

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  8. If cot theta=7/8 , evaluate: ((1+sintheta)(1-sintheta))/((1+costheta...

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  9. If cot theta=7/8 , evaluate: cot^(2)theta

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  10. If 3 cot A = 4, check whether (1-tan^(2)A)/(1+tan^(2)A)=cos^(2)A-sin^(...

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  11. In triangle ABC, right angled at B, if tanA=1/(sqrt3). Find the value ...

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  12. In triangle ABC, right angled at B, if tanA=1/(sqrt3). Find the value ...

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  13. In DeltaPQR, right angled at Q, PR + QR = 25 cm and PQ = 5 cm. Determi...

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  14. State whether the following are true or false. Justify your answer : ...

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  15. State whether the following are true or false. Justify your answer : ...

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  16. State whether the following are true or false. Justify your answer : ...

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  17. State whether the following are true or false. Justify your answer : ...

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  18. State whether the following are true or false. Justify your answer : ...

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