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If tantheta=a/b , show that (asintheta-b...

If `tantheta=a/b` , show that `(asintheta-bcostheta)/(asintheta+bcostheta)=(a^2-b^2)/(a^2+b^2)`

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MAHAVEER PUBLICATION-TRIGONOMETRIC RATIOS-QUESTION BANK
  1. Given tan theta=-3/4 and (3pi)/2 lt theta lt 2pi, find the other trigo...

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  2. If tan (A+B)=p, tan(A-B)=q find tan 2A.

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

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  4. Evaluate the following: sin 78^@ cos 18^@-cos 78^@ sin 18^@

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  5. Evaluate the following: cos 47^@ cos 13^@-sin 47^@ sin 13^@

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  6. Find the value of the following trigonometric functions: sin 765^@

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  7. Find the value of the following trigonometric functions:cos(-1410^@)

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  8. Find the value of the following trigonometric functions:sin(-(11pi)/3)

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  9. Find the value of the following trigonometric functions:cot(-(15pi)/4)

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  10. Find the value of the following trigonometric functions:cos(-(31pi)/3)

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  11. Find the value of the following trigonometric functions:sin 570^@

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  12. Find the value of the following trigonometric functions:tan(-1125^@)

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  13. Find the value of the following trigonometric functions:sin 1110^@

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  14. Find the value of the following trigonometric functions:sin 660^@

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  15. Find the value of the following trigonometric functions: cos(-225^@)

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  16. Show that sin^2 20^@+sin^2 70^@=1

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  17. Show that sin^2 49^@+sin^2 41^@=1

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  18. Show that sin^2 36^@+sin^2 54^@=1

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  19. Show that sin^2 46^@+sin^2 44^@=1.

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  20. Prove that sqrt((1+sintheta)/(1-sintheta))+sqrt((1-sintheta)/(1+sinthe...

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