Mathematics
Senior High
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次の値を簡単にせよ。
(19) sin(90°+0)
(20) cos(180°+0)
(21) tan(270°+0)
(22) sin(-0)
(23)
cos(-0)
(24) tan (90°+0)
(25
sin(0+180°)
(26) cos(0+270°)
(27) tan(9+180°)
(28) sin(270°+0)
(29 cos(0+ 90°)
(30) tan(-0)
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