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In Delta ABC, A is an obtuse angle , si...

In `Delta ABC, `A is an obtuse angle , ` sin A =3//5 , sin B= 5//13 " then " sin C= `

A

`(12)/(65)`

B

`(10)/(65)`

C

`(16)/(65)`

D

`(17)/(85)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-COMPOUND ANGLES-EXERCISE - II
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  2. If 270^(@) lt A lt 360^(@), 90^(@) lt B lt 180^(@) , cos A =5//13 , ta...

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  3. In Delta ABC, A is an obtuse angle , sin A =3//5 , sin B= 5//13 " the...

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  4. If cos alpha = -12//13 , cot beta = 24//7 , 90^(@) lt alpha lt 180^(@...

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  5. If 0 lt alpha , beta lt pi//4, cos ( alpha + beta )=4//5 , sin (alpha...

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  6. If x= tan A - tan B , y= cot B- cot A " then " (1)/(x)+(1)/(y)=

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  7. If A,B,C are acute angles , tan A=1/2 , tan B=1//5 , tan C=1//8 , " th...

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  8. The value of ( sin theta )/( sin^(2) (pi//8 + theta //2)-sin^(2)(pi//8...

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  9. 2(cos^(2) 73^(0) +cos^(2)47^(0)) - cos 154^(0) =

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  10. If Tan40^(@) + 2 Tan 10^(@) = Cotx then x =

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  11. If A+B+C= 360^(@) " then " cot""(A)/(4)+ cot ""(B)/(4) + cot ""(C)/(4)...

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  12. Tan (A-B) + Tan (B-C) + Tan (C-A)

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  13. If A+B+C=(pi)/2, " then " sum (cos (B+C))/(cos B cos C)=

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  14. If alpha + beta + lambda = (pi)/(2) and cot alpha, cot beta, cot lamb...

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  15. If Sin x Cosy = 1/4 and 3Tanx = 4 Tany then Sin (x - y) =

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  16. If Cot A Cot B = 2 & Cos (A+B) = 3/5 then Sin A Sin B

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  17. If cos (A-B)=3//5 and tan A tan B=2 , then which one of the following...

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  18. Prove that sin^(2)alpha + cos^(2) (alpha + beta) + 2 sin alpha sin bet...

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

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

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