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Show that tan 15^@ = 2 - sqrt3...

Show that
`tan 15^@` = `2 - sqrt3`

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A N EXCEL PUBLICATION-TRIGONOMETRIC FUNCTIONS-QUESTION BANK
  1. Evaluate cos^2(pi/8)+cos^2((3pi)/8)+cos^2((5pi)/8)+cos^2((7pi)/8)=2

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  2. Prove that sinA/(1+cosA)=tan(A/2)

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  3. Show that tan 15^@ = 2 - sqrt3

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  4. Given that 1-costheta=2sin^2(theta/2) and 1+costheta=2cos^2(theta/2) p...

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  5. Given that 1-costheta=2sin^2(theta/2) and 1+costheta=2cos^2(theta/2)de...

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  6. Writing 4A=2xx2A prove that sin4A=4sinAcos^3A-4cosAsin^3A

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  7. if sin4A=4sinAcos^3A-4cosAsin^3A Dividing numerator and denominator on...

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  8. cosecA=1/sinA and cotA=cosA/sinA prove cosecA-cotA=tan(A/2)

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  9. Given that 1-costheta=2sin^2(theta/2) and 1+costheta=2cos^2(theta/2)de...

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  10. Given that tantheta=a/b find sin2theta and cos2theta

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  11. Given that tantheta=a/b prove that bcos2theta+asin2theta=b

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  12. Solve 2cos^2t+3sint=0

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  13. Solve sin2theta+costheta=0

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  14. solve sqrt3 costheta+sintheta=sqrt2

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  15. Find the principle and general solution of the following. tan x = s...

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  16. Find the principal and general solutions of the following equations s...

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  17. Find the principal and general solutions of the following equations ...

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  18. Find the principle and general solution of the following. cosec x =...

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  19. Find the general solution of the following equations cos 4x = cos 2x

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  20. Find the general solution of the following equations cos 3x+cos x-co...

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