Question

prove sin50+sin70-√3sin80=0​

Answer 1

Answer:

$we \: know \: that \\ 4sin \emptyset sin(60 \degree + \emptyset)sin(60 \degree - \emptyset) = sin3 \emptyset \\ so \\ sin10 \degree sin70 \degree sin50 \degree sin60 \degree \\ = \frac{1}{4} sin(10 \times 3) \degree \times sin60 \degree \\ = \orange{\boxed{\frac{ \sqrt{3} }{16} }}$

Answer 2

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