Question

the value of cot 30 tan 60 cos 120 sin 150

Answer 1

Answer:

Tan 60 = 1.73 cos 120 = -0.5 sin 150 = 0.5

Answer 2

Answer:

$\cot(30) \tan(60) \cos(120) \sin(150) \\ = \frac{1}{ \ \tan(30) } \times \sqrt{3} \times \cos(90 + 30) \sin(180 - 30 \\ = \frac{1}{ \frac{1}{ \sqrt{3} } } ) \times \sqrt{3} \times ( - \ \sin(30) ) \times \sin(30) \\ = - \sqrt{3} \times \sqrt{3} \times \frac{1}{2} \times \frac{1}{2 } \\ = - 3 \times \frac{1}{4 } = - \frac{3}{4}$

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