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Let alpha = 3 cos^(-1) (5/sqrt28) + 3 t...

Let `alpha = 3 cos^(-1) (5/sqrt28) + 3 tan^(-1) ( sqrt3/2) " and " beta = 4 sin ^(-1) ((7sqrt2)/10) - 4 tan^(-1) (3/4)`, then which of the following does not hold (s) good ?

A

`alpha lt pi " but " beta gt pi`

B

`alpha gt pi " but " beta lt pi`

C

Both `alpha " and " beta` are equal

D

`cos ( alpha + beta) = 0`

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
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