 | 英文なのですが、どなたか解答方法を詳しく教えてくださいませんか？問題は３問です。the inverse trig functionsを計算機を使って答えを出さないでください。
１)Evaluate the expression by sketching a triangle
＃Enter answer as an exact value (i.e., a fraction...AND, all fractions must be reduced).：
tan(1/2 sin^(-1)96/265)
２)Evaluate the following (assume initial angels are in Quadrant-I)
＃(Answer should be exact and all fractions should be reduced.)
cos(2tan^(-1) (47/18))
３）Find the exact value of the expression:
sin^(-1)(sin(-240868/45 pi))
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