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If cottheta=7/8, evaluate:(i) ((1+sin...

If `cottheta=7/8`, evaluate:(i) `((1+sintheta)(1-sintheta))/((1+costheta)(1-costheta))` (ii) `cot^2theta`

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OSWAL PUBLICATION-INTRODUCTION TO TRIGONOMETRY AND TRIGONOMETRIC IDENTITIES -NCERT CORNER (Textbook Questions) (Exercise - 8.1)
  1. In DeltaABC , right - angled at B , AB = 24 cm , BC = 7 cm . sinA, c...

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  2. In DeltaABC , right - angled at B , AB = 24 cm , BC = 7 cm . sinC , ...

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

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  4. If s in A=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 sec theta =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 sho...

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  8. If cottheta=7/8, evaluate:(i) ((1+sintheta)(1-sintheta))/((1+costhe...

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

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  10. If 3cot A=4, check whether (1-tan^2A)/(1+tan^2A)=cos^2A-sin^2Aor not.

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  11. In triangle ABC, right-angled at B. if tan A = 1/sqrt(3),find the valu...

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  12. In triangle ABC, right-angled at B. if tan A = 1/sqrt(3),find the valu...

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

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

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

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

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

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

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