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In DeltaABC, a=6,b=4 and cos (A-B)=4//5 ...

In `DeltaABC, a=6,b=4 and cos (A-B)=4//5` then its area is

A

9

B

12

C

11

D

10

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-PROPERTIES OF TRIANGLES-LECTURE SHEET EXERCISE - II(Linked comprehension Type Questions)
  1. Let OAB be a quadrant of a circle with boundary radii OA = 1, OB = 1 ...

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  2. Let OAB be a quadrant of a circle with boundary radii OA = 1, OB = 1 ...

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  3. Let OAB be a quadrant of a circle with boundary radii OA = 1, OB = 1 ...

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  4. In DeltaABC, a=6,b=4 and cos (A-B)=4//5 then its area is

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  5. In Delta ABC, if a = 6, b=3 and cos (A-B) = (4)/(5) " then " ang...

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  6. Let a = 6, b = 3 , " and " cos (A - B) = 4/5 Value of sin A is equa...

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  7. Let ABC be a triangle with integer sides a,b,c and angle C = 90^(@) ...

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  8. Let ABC be a triangle with integer sides a,b,c and angle C = 90^(@) ...

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  9. Let ABC be a triangle with integer sides a,b,c and angle C = 90^(@) ...

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  10. If the angles of a triangle are in AP and the least angle is 30^(@) . ...

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  11. In Delta ABC , If tan A , tan B , tan C are in H.P., then a^(2) , b^(...

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  12. In Delta ABC , if Tan . A/2 = 5/6 " and " Tan. B/2 = 20/37 then the s...

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  13. In Delta ABC, If a, b,c are in A.P., then Cot . A/2 ,Cot. B/2 , Cot . ...

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  14. In Delta ABC, If a , b, c are in A.P. then Cot. A/2 Cot. C/2 =

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  15. In a Delta ABC , " If " Cosec^(2) . A/2 , Cosec^(2). C/2 , Cosec^(2). ...

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  16. In DeltaABC, if a"Cos"^(2)(C)/(2)+c"Cos"^(2)(A)/(2)=(3b)/(2) , then a,...

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  17. In DeltaABC, if a,b, c are in A.P then (2"Sin"(A)/(2)"Sin"(C)/(2))/("S...

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  18. In Delta ABC, if the sides a,b,c are in geometric progression and the ...

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