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In DeltaBC, sum (sin(B-C))/(bc)=...

In `DeltaBC, sum (sin(B-C))/(bc)`=

A

`Delta`

B

s

C

0

D

`S^(2)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE SHEET (EXERCISE-I) (LEVEL-I) (Straight- Objective Type Questions)
  1. In DeltaBC, sum (sin(B-C))/(bc)=

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  2. In DeltaABC, sum ((b^(2)-c^(2)))/(a)cosA=

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  3. In DeltaABC, b^(2) sin2C+c^(2)sin 2B=

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  4. If a=5, b=6, sin A=5//A then B=

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  5. In Delta ABC,if A=30^@,b=8,a=6,B=Sin^-1 x, then x=

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  6. In Delta , sum a^(3) sin (B-C) =

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  7. sum (b^(2) -c^(2))/( a^(2)) sin ^(2) A =

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  8. In Delta ABC, 2R^(2) sinAsinB sinC=

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  9. a^(2) sin 2C + c ^(2) sin 2A =

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  10. In Delta ABC , if a= sqrt3 + 1, b = 2, B = 45 ^(@) , then A =

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  11. In Delta ABC, if Sin A and sin B are the roots of the equation c^2x^2-...

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  12. In Delta ABC, if C=90^@then (a^2+b^2)/(a^2-b^2)sin (A-B)=

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  13. Prove that (1+cos(A-B)cosC)/(1+cos(A-C)cosB)=(a^(2)+b^(2))/(a^(2)+c^(2...

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  14. In Delta ABC " if " 3 sin A = 6 sin B = 2 sqrt3 sin C , " then " a...

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  15. In Delta ABC , (a^(2) - b^(2) -c^(2) ) tan A + (a^(2) -b^(2) +c^(2...

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  16. If in a triangle ABC, 4 sin A= 4 sin B=3 sin C, the cos C=

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  17. In a triangle ABC, if (sqrt(3)-1)a=2b,A=3B then angleC is

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  18. In DetlaABC, if (SinA)/(SinC)=(Sin(A-B))/(Sin(B-C)) then a^(2),b^(2)c^...

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  19. The radius of the circumcircle of an isosceles triangle POR is equal t...

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  20. If the angles of a right angled triangles are in A.P. Then the side...

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