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If tantheta=(sin alpha-cos alpha)/(sinal...

If `tantheta=(sin alpha-cos alpha)/(sinalpha+cosalpha)1` then

A

`sinalpha-cosalpha=+-sqrt2sintheta`

B

`sinalpha+cosalpha=+-sqrt2costheta`

C

`cos2theta-sin2alpha`

D

`sin2theta+cos2alpha=0`

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The correct Answer is:
A, B, C, D
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PATHFINDER-TRIGONOMETRIC RATIOS AND IDENTITIES-QUESTION BANK
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  2. If secA+tanA=3/2 then

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  3. If tantheta=(sin alpha-cos alpha)/(sinalpha+cosalpha)1 then

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  5. The value of cos((2pi)/7)cos((4pi)/7)cos((6pi)/7) is

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  6. The value of sin (pi/14)sin(3pi/14)sin(5pi/14)sin(7pi/14)sin(9pi/14)si...

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  7. If Pn=sin^ntheta+cos^ntheta where n in W (whole number)and theta in R ...

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  8. If Pn=sin^ntheta+cos^ntheta where n in W (whole number)and theta in R ...

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  9. If Pn=sin^ntheta+cos^ntheta where n in W (whole number)and theta in R ...

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  10. if f(theta)=acostheta+bsintheta then -sqrt(a^2+b^2)lef(theta)lesqrt(a^...

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  11. if f(theta)=acostheta+bsintheta then -sqrt(a^2+b^2)lef(theta)lesqrt(a^...

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  12. if f(theta)=acostheta+bsintheta then -sqrt(a^2+b^2)lef(theta)lesqrt(a^...

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  13. Find the range of A/2 if it satisfies 2 cos( A/2)=sqrt(1+sin A)-sqrt(1...

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  14. If for two sets A and B,A-B=A then which of the following is true?

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  15. Match List - I with List-II

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  16. Match List - I with List-II

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  18. If sin 47^@+sin61^@-sin11^@-sin25^@ equals cosk^@,then k=?

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  19. The value of e^(log10tan1^@+log10tan2^@+log10tan3^@+...+log10tan89^@ i...

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  20. cos((2pi)/7)+cos((4pi)/7)+cos((6pi)/7)

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