$$\(\left(\sin 6^{\circ}\right)\left(\sin 42^{\circ}\right)\left(\sin 66^{\circ}\right)\left(\sin 78^{\circ}\right)=\)$$
A.
\(\frac{1}{16}\)
B.
\(\frac{1}{8}\)
C.
\(\frac{\sqrt{3}}{16}\)
D.
\(\frac{1}{32}\)
Exam No：2019 First Round Grades 10-12 Year：2019 Question No：23
Answer:
A
Knowledge points:
G10-12 - Algebra - Trigonometric Identities & Equations
Solution:
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