1.

For the principal values, evaluate each of the following:(i) cos-112+2sin-112(ii) (iii) sin-1-12+2 cos-1-32(iv) sin-1-32+cos-132

Answer» For the principal values, evaluate each of the following:



(i) cos-112+2sin-112

(ii)

(iii) sin-1-12+2 cos-1-32

(iv) sin-1-32+cos-132


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