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If cosalpha=cosbeta, then alpha+beta=...

If `cosalpha=cosbeta`, then `alpha+beta=`____

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MBD PUBLICATION-TRIGONOMETRIC FUNCTIONS-QUESTION BANK
  1. Ifsin^4alpha/a+cos^4alpha/b=1/(a+b) show that sin^8alpha/a^3+cos^8alph...

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  2. The number of solutions of 2sintheta-1=0 is.

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  3. If cosalpha=cosbeta, then alpha+beta=

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  4. The number of solution(s) of 2sectheta+1=0 is.

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  5. If tantheta=tanalpha and 90ltalphalt180, then ' theta ' can be in th...

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  6. If tanx cdot tan 2x cdot tan 7x =tanx+tan2x+tan7x, then x=

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  7. For value of theta, sintheta+costheta=sqrt2

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  8. The number of values of x for which cos^2x=1 and x^2le 4 is

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  9. In the 1st quardrant the solution of tan^2theta=3 is

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  10. The least positive value of theta for which 1 + tan theta=0 and sqrt2 ...

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  11. The least positive value of x for which tan 3x=tan x is

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  12. Find the principal solution of the following equations:sintheta=sin2th...

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  13. Find the principal solution of the following equations:sqrt3 sintheta-...

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  14. Find the principal solution of the following equations:cos^2theta+sint...

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  15. Find the principal solution of the following equations:sin 4x+sin 2x=0

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  16. Find the principal solution of the following equations:sinx+cosx=frac{...

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  17. Find the general solutions of the following equations:cos 2x= 0

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  18. Find the general solutions of the following equations:sin(x^@+40^@)=fr...

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  19. Find the general solutions of the following equations:sin 5theta=sin 3...

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  20. Find the general solutions of the following equations:tan ax=cot bx

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