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In Delta ABC if b=20,c=21 and sin A=3//5...

In `Delta ABC if b=20,c=21 and sin A=3//5`, then a=

A

`12`

B

` 13`

C

` 14`

D

` 15`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - II
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  4. In Delta ABC, if sin A: sin C=sin (A-B): sin (B-C), then a^2,b^2,c^2 a...

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  5. If cot ""^(A)/(2) : cot ""(B) /(2) : cot "" ( C )/(2) = 1: 4: 15 , ...

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  7. In Delta ABC, if tanA: tan B: tan C=1:2:3, then sin A: sin B: sin C=

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  10. a^(2) cot A+ b^(2) cot B+ c ^(2) cot C =

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  11. In a triangle , if the larger side is 7 and one of the angle is 120 ^...

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  12. In Delta ABC, (cos A)/(c sin B)+(cos B)/( a sin C)+(cos C)/( b sin A)=

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  13. If alpha,beta,gamma are the lengths of the altitudes of Delta ABC, the...

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  14. IF alpha,beta,gamma are the lengths of the altitudes of Delta ABC, the...

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  15. If alpha,beta,gamma, are lengths of the altitudes of a triangle ABC wi...

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  16. In Delta ABC, B = 45 ^(@) , C = 120 ^(@) , a= 40 cm, the length of ...

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  17. If the base angles of a triangle are 22 (1^(0) )/(2) , 112 (1^(0))/(2...

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