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In a triangle ABC, let a=6,b=3 and cos(A...

In a triangle ABC, let `a=6,b=3` and `cos(A-B) =4/5` [Note: All symbols used have usual meaning in a triangle.] .Statement 1: `angleB=pi/2` Statement 2: `sin A = 2/sqrt5`

A

Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I

B

Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement I

C

Statement I is correct but Statement II is incorrect

D

Statement I is correct but Statement I is incorrect

Text Solution

Verified by Experts

The correct Answer is:
D
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