40/ The value of sin! To1S181818(d) 1/1641. The value of log tan 1Â° – InterviewSolution

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1.	40/ The value of sin! To1S181818(d) 1/1641. The value of log tan 1Â° + log tan 2 +... +log tan 89, is(a) 0(b) -1(c) 1(d) oo42. If 1 + sin x + sin2x+sin3x +...+... o is equal to4 + 2,13, 0 < x < Ď, then x=
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