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x=sec theta-tan theta, y=cosec theta+cot...

`x=sec theta-tan theta, y=cosec theta+cot theta,` then

A

`x y+1=x-y`

B

`x y+1=y-x`

C

`x y+1=x+y`

D

`x y+1=x`

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HIMALAYA PUBLICATION-MEASUREMENT OF ANGLES, TRIGONOMETRIC RATIOS AND RELATION BETWEEN SIDES AND ANGLES OF A TRIANGLE-QUESTION BANK
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  2. If sin 2 theta+sin 2 phi=(1)/(2) and cos 2 theta+cos 2 phi=(3)/(2) the...

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  3. x=sec theta-tan theta, y=cosec theta+cot theta, then

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  4. If cos theta + sin theta = sqrt(2) cos theta, show that cos theta - si...

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  5. If sin theta+cosec theta=2 then sin ^(2) theta+cosec^(2) theta=

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  6. If cosec A+cot A=(11)/(2), then tan A is

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  7. If cosec theta-cot theta=(1)/(2), 0 lt theta lt(pi)/(2) then cos theta...

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  8. If sin x+sin y=3(cos y-cos x) then the value of sin 3 x+sin 3 y=

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  9. If sec theta+tan theta=1.5 then tan theta=

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  10. If tan theta=(p)/(q) then (p sin theta-q cos theta)/(p sin theta+q cos...

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  11. If tan theta=(b)/(a) then a cos 2 theta+b sin 2 theta=

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  12. If a cos theta-b sin theta=c then a sin theta+b cos theta=

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  13. sin alpha=(12)/(13) (0 lt alpha lt (pi)/(2)r) cos beta=-(3)/(5)(pi lt ...

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  14. If A+B=225^(circ) then (cot A)/(1+cot A) . (cot B)/(1+cot B)=

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  15. If sin theta+sin ^(2) theta+sin ^(3) theta=1 then cos ^(6) theta-4 cos...

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  16. (cos 9^(circ)+sin 9^(0))/(cos 9^(circ)-sin 9^(circ))=

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  17. If sin theta+sin ^(2) theta=1 then cos ^(12) theta+3 cos ^(10) theta+3...

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  18. If cos (alpha+beta)=(4)/(5), sin (alpha-beta)=(5)/(13) and 0 lt alpha ...

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  19. If tan alpha=(1)/(3) and tan (beta)=(1)/(2) then tan (alpha+beta)=

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  20. cos (alpha+beta)=(3)/(5) and sin (alpha-beta)=(3)/(5) and 0 lt alpha, ...

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