Teaching Jharkhand (JSSC) TGT (6 to 8) Mock Test 2023-24 Mathematics Trigonometry Trigonometric Functions

The value of sin 20° sin 40° sin 60° sin 80° is

1
\(\frac{-3}{16}\)
2
\(\frac{5}{16}\)
3
\(\frac{ 3}{16}\)
4
\(\frac{1}{16}\)
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