Mathematics
Senior High
Resolved

-sin π/6 がどうして -1/2 になるのですか?

281 (1) sin( 2) 兀 1) sin(-7)=-sin 1767 6 cos(-)=coST 3) tan( 3 4 兀 -tan -1 2 34 兀 -(−1) =1

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