CotA-cosA/cotA+cosA--cosecA-1/cosecA+1
Answers
Answered by
2
Answer:
LHS=
cotA+cosA
cotA−cosA
=
sinA
cosA
+cosA
sinA
cosA
−cosA
=
cosA(
sinA
1
+1)
cosA(
sinA
1
−1)
=
sinA
1
+1
sinA
1
−1
=
cosecA+1
cosecA−1
=RHS
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