1.

​Find the principal values of each of the following:(i) cosec-1(-2)(ii) cosec-1(-2)(iii) cosec-123(iv) cosec-12cos2π3

Answer» Find the principal values of each of the following:



(i) cosec-1(-2)

(ii) cosec-1(-2)

(iii) cosec-123

(iv) cosec-12cos2π3


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