if sin A = cos A , then the value of 2 tan A + cos^ 2A is
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Answer:
sinA=cosA
2tanA−2cotA=
cosA
2sinA
−
sinA
2cosA
=
cosAsinA
2sin
2
A−2cos
2
A
=
cosAsinA
2sin
2
A−2sin
2
A
(∵sinA=cosA)
=0
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