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Dante6662
@Dante6662
July 2022
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Как решить это выражение? Естественно, 16 градусов и 32 градуса.
(sin 16*cos 16)/sin 32
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Answers & Comments
Gerren
Sina2a=2sinacosa
sin16cos16/sin32=sin16cos16/2sin16cos16=1/2
1 votes
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СофаСофачка
Sin 32° разложим по формуле
sin 2a=2cosa*sin a
sin 2*16=2*cos16*sin16
Итого:
=(sin16*cos16)/(2*cos16*sin16)=1/2=0,5
0 votes
Thanks 0
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Answers & Comments
sin16cos16/sin32=sin16cos16/2sin16cos16=1/2
sin 2a=2cosa*sin a
sin 2*16=2*cos16*sin16
Итого:
=(sin16*cos16)/(2*cos16*sin16)=1/2=0,5