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if 0ltalpha,beta,gamma lt(pi/2) prove th...

if `0ltalpha,beta,gamma lt(pi/2)` prove that `sin alpha+sin beta+sin gamma gtsin(alpha+beta+gamma)`

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PATHFINDER-TRIGONOMETRIC RATIOS AND IDENTITIES-QUESTION BANK
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  8. In triangle ABC, right angled at C, (tanA+tanB) equal to

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  9. If sintheta and costheta are the roots of the equation ax^2-bx+c=0, th...

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  10. (cosalpha+cosbeta)^2+(sinalpha+sinbeta)^2=

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  11. If tanbeta=(2sinalphasingamma)/sin(alpha+gamma), then cotalpha,cotbeta...

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  12. If(1+tan1^@)(1+tan2^@)....(1+tan45^@)=2^n, then the value of n is

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  14. If sec(theta+alpha)+sec(theta-alpha)=2/costheta. then cos^2theta is eq...

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  15. If tanA=(1-cosB)/sinB, then

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  17. 3(sinx-cosx)^4+6(sinx+cosx)^2+4(sin^6x+cos^6x) is equal to

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  19. tan9^@-tan27^@-tan63^@+tan81^@ is equal to

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