cot A - cos A / cot A + cos A = sec a + tan 2a = 2 sec a tan a
Answers
Answered by
2
cosec
2
Acot
2
A−sec
2
Atan
2
A−(cot
2
A−tan
2
A)(sec
2
A+cosec
2
A−1)
=cosec
2
Acot
2
A−sec
2
Atan
2
A−cot
2
Asec
2
A−cot
2
Acosec
2
A+cot
2
A
+tan
2
Asec
2
A+tan
2
Acosec
2
A−tan
2
A
=−cot
2
Asec
2
A+cot
2
A+tan
2
Acosec
2
A−tan
2
A
=−cot
2
A(sec
2
A−1)+tan
2
A(cosec
2
A−1)
=−cot
2
Atan
2
A+tan
2
Acot
2
A
=−1+1
=0
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