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If tan theta=(20)/(21), write the value...

If `tan theta=(20)/(21), ` write the value of `(("cosec"^(2)theta -sec^(2) theta))/(("cosec"^(2)theta+sec ^(2)theta ))`

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To solve the problem, we need to find the value of \[ \frac{\csc^2 \theta - \sec^2 \theta}{\csc^2 \theta + \sec^2 \theta} \] given that ...
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RS AGGARWAL-TRIGONOMETRIC RATIOS-Exercise 10
  1. If cos theta =0.6 find (5 sin theta- 3 tan theta).

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  2. If "cosec"theta=2, show that (cottheta+(sintheta)/(1+costheta))=2.

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  3. If tan theta=(20)/(21), write the value of (("cosec"^(2)theta -sec^(2...

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  4. If tantheta=(20)/(21) , show that (1-sintheta+costheta)/(1+sintheta...

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  5. If sec theta =(5)/(4),"show that "((2cos theta - sin theta ))/((cot th...

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  6. If cot theta =(3)/(4), show that sqrt((sectheta- "cosec"theta)/(sect...

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  7. If sintheta=3/4, then prove that sqrt((cosec^2 theta-cot^2 theta)/(sec...

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  8. If sintheta=a/b , find sectheta+tantheta in terms of a and b .

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  9. If costheta=3/5, find the value of (sintheta-1/tantheta)/(2tantheta)

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  10. If tan theta =(4)/(3) , show that (sin theta + cos theta )=(7)/(5).

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  11. If tantheta=a/b , show that (asintheta-bcostheta)/(asintheta+bcostheta...

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  12. If 3 tan theta =4, show that ((4 cos theta -sin theta))/((a cos the...

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  13. If 3 cot theta= 2 , show that ((4 sin theta - 3 cos theta ))/((2 sin ...

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  14. If 3cot theta=4 then show that (1-tan^2theta)/(1+tan^2 theta)=(cos^2 t...

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  15. If costheta=(8)/(17),verify that (3-4sin^(2)theta)/(4cos^(2)theta-3)=(...

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  16. In the adjoining figure , angle B=90^(@),angle BAC=theta^(@),BC=CD=4 ...

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  17. In a Delta ABC,angle B=90^(@),AB=24 cm and BC=7 cm . Find (i) sin A...

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  18. In a DeltaABC,/C=90^@,/ABC=theta^@,BC=21 units and AB=29 units. Show t...

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  19. In a Delta ABC,angle B=90^(@),AB=12 cm and BC = 5cm find (i) cos A ...

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  20. If sin alpha =(1)/(2) , prove that (3 cos alpha - 4 cos ^(3) alpha )...

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