\(\frac{d}{{dx}}cosec\;hx\)

1.	\(\frac{d}{{dx}}cosec\;hx\)
A.	cosechx cothx
B.	– cosechx cothx
C.	– sechx cothx
D.	sechx cothx
Answer» C. – sechx cothx

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\(\frac{d}{{dx}}cosec\;hx\)

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