(cos(((4*pi)/9)*(quad*(text*(i*(i*i)))))*tan((5*pi)/9))*sin(((7*pi)/18 – InterviewSolution

1.

(cos(((4pi)/9)(quad(text(i(ii)))))tan((5pi)/9))sin(((7pi)/18)(quad(text(ii))))

Answer»

here ans is sin 7π/18

(i) : +next both negative

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