What is the value of cosec^2A-cot^2A?
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cosec 2A−cot2A−tanA
sin2A
1
−
sin2A
cos2A
−tanA
sin
2
A
1−cos2A
−tanA
2sinAcosA
1−(1−2sin
2
A)
−tanA
=
2sinAcosA
2sin
2
A
−tanA
=tanA−tanA
=0
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