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If alpha, beta, gamma are positive acute...

If `alpha, beta, gamma` are positive acute angles, prove that `sin alpha+sin beta+ sin gamma gt sin (alpha+ beta+ gamma)`

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CHHAYA PUBLICATION-MISCELLANEOUS EXAMPLES-TRIGONOMETRY
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  2. find the differtiation of tan(a^x)

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  3. If alpha, beta, gamma are positive acute angles, prove that sin alpha+...

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  4. find the differtiation of sin(e^x)

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  5. If cos alpha+ cos beta= a and sin alpha+ sin beta =b, then show that s...

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  6. Find "sin" (A)/(2) and "cos" (A)/(2) in terms of "tan"( A)/(4).

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  7. If tan theta (cos alpha+ sin beta), then show that one value of "tan" ...

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  8. If sin (pi cot theta)= cos (pi tan theta) and n is an integer, then...

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  9. Prove that the maximum value of (cos alpha(1)) (cos alpha(2))...( cos ...

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  10. Show that sin^(2) 12^(@)+ sin ^(2)21^(@)+ sin ^(2)39^(@)+ sin^(2)48^(@...

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  11. If alpha+ beta=(pi)/(2) and beta+ gamma= alpha then prove that tan alp...

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  12. theta and theta(2) are two distinct values of theta[ 0 le theta(1) 2p...

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  13. Find the values of alpha and beta[ 0 lt alpha, beta lt (pi)/(2)] satis...

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  14. Find all the values of alpha for which the equation sin ^(4) x+ cos^(4...

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  15. In sin alpha+ sin beta=(1)/(2) and cos alpha+ cos beta =(5)/(4), find ...

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  16. A 12 cm long wire is bent to form a triangle with one of its angles as...

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  17. If (cos alpha+ cos beta+ cos gamma)/( cos (alpha+ beta+ gamma))=(sin a...

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  18. If a tan x+ b tan y+ c tan z=m, then show that the minimum value of ta...

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  19. Prove thattan (alpha+ (pi)/(3)) tan (alpha-(pi)/(3))+ tan alpha tan (a...

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  20. If sin alpha+ sin gamma+ sin alpha sin beta sin gamma=0, show that cos...

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