December 2018 1 42 Report
Quiz Math "Can You Find The Aswers?"

Level : Difficult
Materi : Trigonometri

Nilai dari AB bila diketahui :
A = cos~10^0~.~cos~20^0~.~cos~30^0~.~cos~40~^0
dan
B = cos~50^0~.~cos~60^0~.~cos~70^0~.~cos~80~^0

adalah...
a.~ \frac{1}{256} \\ \\   b.~ \frac{3}{256} \\ \\   c.~ \frac{5}{256} \\ \\   d.~ \frac{7}{256} \\ \\   e.~ \frac{9}{256} \\ \\

NB : Mohon menggunakan cara yang jelas!!
by : Dark_Neutron
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