If in a DeltaABC,a^(2)cos^(2)A-b^(2)-c^(...

If in a `DeltaABC,a^(2)cos^(2)A-b^(2)-c^(2)=0`, then

A

(a) `(pi)/(4)ltAlt(pi)/(2)`

B

(b) `(pi)/(2)ltAltpi`

C

(c) `A=(pi)/(2)`

D

(d) `Alt(pi)/(4)`

Verified by Experts

The correct Answer is:

B

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