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Prove that sin2A + sin2B + sin2C = 4sinA...

Prove that sin2A + sin2B + sin2C = 4sinA · sinB · sin C

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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
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  2. If cos3x+sin(2x-(7pi)/6)=-2 , then show that x is of the form π / 3(6...

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  3. Prove that sin2A + sin2B + sin2C = 4sinA · sinB · sin C

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  4. If H is the othrocenter of an acute angled triangle ABC whose circumci...

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  6. Let us consider the equation cos^4x/a+sin^4x/b=1/(a+b),x in[0,pi/2],a,...

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  8. The total number of solution of cosx=sqrt(1-sin2x) in [0,2pi] is equal...

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  12. The equation sin^4x+cos^4x+sin2x+alpha=0 is solvable for -5/2lt=alphal...

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  18. If (y+3)/(2y+5)=sin^2x+2cosx+1, then the value of y lies in the interv...

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  19. If alpha+beta+gamma=2pi, then (a) tan(alpha/2)+tan(beta/2)+tan(gamma...

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  20. The total number of solution of |cotx|=cotx+1/(sinx),x in [0,3pi] , is...

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