(chatquestion)...sin’ xcos² x 74. The integral (sin* x + cos® xsin? x +sin? x cos² x + cos® x) is equal to : 1 (1) 3(1+ tan x) -1 (2) 3(1+ tan" x) +C (3) 1+cot x +C -1 (4) 1+cot x +C

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