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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