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In `aDelta^("le") ABC` If `"Tan"(A)/(2)=(5)/(6),"Tan"(B)/(2)=(20)/(37)` then `"Tan"(C)/(2)=`

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In Delta ABC, " if " tan""(A)/(2)=(5)/6 , tan""(B)/(2)=(20)/(37) " then " tan""(C)/(2)=

In a Delta ABC, If tan .(A)/(2)=(5)/(6) and tan .(B)/(2) =(20)/(37) , then show that tan ((C)/(2))=(2)/(5)

If tan "" (A ) /(2) = (5)/(6) , tan "" ( B)/(2) = ( 20 )/( 37) " then " a,b,c are in

If tan ""(A)/(2) = (5)/(6) , tan "" (B)/(2) = ( 20 )/( 37) then show that tan "" (C )/(2) = (2)/(5) . Also show that a,b,c are in A.P.

In DeltaABC , tan""((A+B)/(2))*tan""(C)/(2)=

In Delta ABC tan "" ( A)/(2) = ( 5)/( 6) , tan "" ( C )/(2) = (2)/(5) then a,b,c are such that

In Delta ABC, tan""(A)/(2)+tan ""(B)/(2)=

tan ""(A)/(2) + tan ""(B)/(2) + tan""(C )/(2) =

AAKASH SERIES-MULTIPLE & SUBMULTIPLE ANGLES-EXERCISE 3.1 ( SHORT ANSWER QUESTION )
  1. If none of 2A, 3A is an odd multiple of pi/2 then prove that tan 3A ...

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  2. For alpha , beta in R, prove that (cos alpha + cos beta )^(2)+ (sin al...

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  3. IF theta is not an integral muliple of pi/2, prove that tantheta+2ta...

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  4. Prove that (cos3A + sin3A)/(cosA - sin A) = 1+ 2sin 2A.

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  5. Prove that cot(pi/4-theta)=(cos2theta)/(1-sin2theta) and hence find th...

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  6. If theta lies in third Quardrant and Sintheta=(-4)/5. Find the values ...

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  7. If 450^(@)lt theta lt 540^(@) and Sintheta=12/13 then calculate "Sin"t...

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  8. Prove that (sin2A)/((1+Cos2A))((CosA))/(1+CosA)=tan.A/2

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  9. (Cos^(3)theta-Cos3theta)/(Costheta)+(Sin^(3)theta+Sin3theta)/(Sintheta...

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  10. Show that CosA=(Cos3A)/(2Cos2A-1). Hence find the value of Cos15^(@)

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  11. Show that sin A= (sin 3A) /(1+2 cos 2A). Hence find the value of sin 1...

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  12. Prove that tanalpha=(Sin2alpha)/(1+cos2alpha) and hence deduce the val...

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  13. In aDelta^("le") ABC If "Tan"(A)/(2)=(5)/(6),"Tan"(B)/(2)=(20)/(37) th...

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  14. If Costheta=5/13 and 270^(@)ltthetalt360^(@). Evaluate "Sin"theta/2 an...

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  15. If 180^(@)lt thetalt270^(@) and Sintheta=(-4)/5 calculate "Sin"theta/2...

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  16. Show that sin""(pi)/5.sin""(2pi)/5.sin""(3pi)/5.sin""(4pi)/5=5/16.

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  17. Prove that cos ^(2). (pi)/(8) + cos ^(2). (3pi)/(8)+ cos ^(2). (5 pi )...

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  18. Prove that "Cos"^(2)(pi/10)+"Cos"^(2)((2pi)/5)+"Cos"^(2)((3pi)/5)+"Cos...

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