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sin A + sin B = sqrt(3) ( cos B- cos A )...

`sin A + sin B = sqrt(3) ( cos B- cos A )implies sin 3A + sin 3B=`

A

0

B

2

C

1

D

-1

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AAKASH SERIES-COMPOUND ANGLES-EXERCISE - II
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  2. Prove that sin^(2)alpha + cos^(2) (alpha + beta) + 2 sin alpha sin bet...

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  3. sin A + sin B = sqrt(3) ( cos B- cos A )implies sin 3A + sin 3B=

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  4. If (CosA)/(CosB)=nand(SinA)/(SinB)=m then (m^(2) - n^(2)) Sin^(2) B =

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  5. If tan A=(x sin B)/(1- x cos B) and tan B=(y sin A)/(1-y cos A) then ...

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  6. If tan beta =(n tan alpha )/(1+(1-n) tan^(2) alpha ), then tan(alpha-...

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  7. If sin (120^(@) - alpha) = sin (120^(@) - beta) and 0 lt alpha,beta lt...

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  8. If 2 tan A + cot A = tan B , then cot A +2 tan (A-B)=

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  9. In a Delta ABC , if the angle C is obtuse, then tan A ta B =

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  10. In a triangle ABC, fi Tan A + Tan B + Tan C = 6 and Tan A Tan B = 2 th...

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  11. In Dleta ABC if Tan B = (2Sin ASinC)/(Sin(A+C)) then TanA, TanB, TanC ...

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  12. In a triangle ABC, If cot A+ cotB +cot C=sqrt3, then show that the tri...

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  13. Tan A + Tan B + Tan C - (sin(A+B+C))/(cosAcosBcosC)=

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  14. Statement-I : If 0 lt alpha, beta lt pi/4, sin alpha =a/sqrt(1+a^(2)),...

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  15. I : If x cos theta = y cos (120^@ + theta ) = z cos ( theta + 240^(@)...

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  16. A =(cos 9^(@) - sin 9^(@))/(cos 9^(@) + sin 9^(@)) , B = (cos 21^(@) +...

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  17. Assertion (A) : If cos(x-y) = 3 cos (x + y) then cotx cotx = 2 Reaso...

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  18. Assertion (A) : tan (alpha - beta) + tan (beta - lambda) + tan (lambda...

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  19. Assertion (A) : tan 70^(@) - tan 20^(@) = 2 cot 40^(@) Reason (R ) : I...

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  20. cos alpha * sin (beta - gamma ) + cos beta * sin ( gamma - alpha ) + c...

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