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(tan45^(@)+cot45^(@))+(sec45^(@)cosec45^...

`(tan45^(@)+cot45^(@))+(sec45^(@)cosec45^(@))` is …………………

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`3`
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FULL MARKS-TRIGONOMETRY-ADDITIONAL QUESTIONS SOLVED (III)
  1. (tan45^(@)+cot45^(@))+(sec45^(@)cosec45^(@)) is …………………

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  2. Prove that sqrt((sectheta-1)/(sectheta+1))+sqrt((sectheta+1)/(sectheta...

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  3. Prove that (1+cosA)/(sinA)+(sinA)/(1+cosA)=2cosecA

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  4. Express the following sum or difference as a product (ii) cos 6 thet...

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  5. Prove that (sin(90^(@)-theta))/(1+sintheta)+(costheta)/(1-cos(90^(@)-t...

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  6. Prove that tantheta/(1-cottheta)+cottheta/(1-tantheta)=1+secthetacosec...

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  7. Prove that (sin(90^(@)-theta))/(1-tantheta)+(cos(90^(@)-theta))/(1-cot...

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  8. Prove that (tan(90^(@)-theta))/(cosectheta+1)+(cosectheta+1)/cottheta=...

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  9. Prove that (cottheta+cosectheta-1)/(cottheta-cosectheta+1)=cosectheta+...

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  10. Prove that (1+cottheta-cosectheta)(1+tantheta+sectheta)=2

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  11. Prove that (sintheta-costheta+1)/(sintheta+costheta-1)=(1)/(cos theta-...

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  12. Prove that 1/(cosectheta-cottheta)-1/(sintheta)=1/(sintheta)-1/(cosect...

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  13. If tantheta=ntanalpha and sintheta=msinalpha then prove that cos^(2)th...

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  14. If sintheta,costheta and tantheta are in G.P., then prove that cot^(6)...

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  15. Find the value of cos 60^(@) + sin 60^(@)

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  16. Find the value of cos 90^(@) + sin 90^(@)

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  17. A1.5 m tall boy is standing at some distance from a 30 m tall building...

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  18. Find the value of cos120^(@)

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