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In Delta ABC , a= 6 ,b=3 and cos (A-B) ...

In `Delta ABC ` , a= 6 ,b=3 and cos (A-B) = 4/5 .Then area of triangle is

A

4 square - unit

B

6 square - unit

C

9 square unit

D

12 square - unit

Text Solution

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The correct Answer is:
C
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