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sin15^(@)+cos105^(@)=?...

`sin15^(@)+cos105^(@)=?`

A

0

B

`2sin15^(@)`

C

`cos15^(@)+sin15^(@)`

D

`sin15^(@)-cos15`

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sin105^(@)+cos105^(@)=

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Solve the equation: cos theta=sin105^(@)+cos105^(@)

Find the value of the following (i) sin105^(@)+cos105^(@)

sin 15^(@) + cos 105 ^(@) =

Prove that : (i) "sin"105^(@)+cos105^(@)=(1)/(sqrt(2)) (ii) cos105^(@)+cos15^(@)="sin"75^(@)-"sin"15^(@)

What is sin105^(@)+cos105^(@) equal to ?

Which of the following number(s) is/are rational? (A) sin15^(@) (B) cos15^(@) (C) sin15^(@)cos15^(@)(D)sin15^(@)cos75^(@)

Which of the following number (s) is/are rational number? (A) sin15^(@) (B) cos15^(@) (C) sin15^(@)cos15^(@)(D)sin15^(@)cos75^(@)

Show that sin 150^(@) + cos 105^(@) =(1)/(sqrt(5))

ADVANCED MATHS BY ABHINAY MATHS ENGLISH-TRIGONOMETRY -EXERCISES (Multiple Choice Questions)
  1. If a tan theta=b, then acos2theta+bsin2theta=?

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  2. cosA+sin(270^(@)+A)-sin(270^(@)-A)+cos(180^(@)+A)=?

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  3. sin15^(@)+cos105^(@)=?

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  4. The value of cos105^(@)+sin105^(@) is

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  5. The value of cos15^(@)-sin15^(@) is

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  6. If xcostheta-sintheta=1, then x^(2)+(1+x^(2))sintheta equals-

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  7. In DeltaABC,cosecA(sinBcosC+cosBsinC)=?

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  8. If for real values of costheta=x+(1)/(x), then

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  9. If cos A = 3/4 then the value of 32sin( A/2)* sin (5A/2) is.

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  10. If sintheta(1)+sintheta(2)+sintheta(3)=3, then costheta(1)+costheta(2)...

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  11. If sintheta=(24)/(25)andtheta is in second quadrant, then sectheta+tan...

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  12. (cos17^(@)+sin17^(@))/(cos17^(@)-sin17^(@))=?

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  13. If sinalpha=(-3)/(5), where piltalphalt(3pi)/(2), then cos""(alpha)/(2...

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  14. The greatest value of the function sqrt(3)sinx+cosx is

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  15. costheta(tantheta+2)(2tantheta+1)=?

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  16. If x and y are the angles lying in the second quadrant and xlty, then ...

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  17. If 0^(@)ltthetalt90^(@), then ((5costheta-4)/(3-5sintheta)-(3+5sinthet...

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  18. If alpha is a positive acute angle and 2sin alpha+15cos^(2)alpha=7, th...

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  19. If 3tantheta+4=0 where (pi)/(2)lt thetaltpi, then the value of 2cot th...

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  20. If sec^(2)theta=3, 0^(@)ltthetalt(pi)/(2), then the value of (tan^(2)t...

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