Mathematics
Senior High
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(3)(4)の求め方がわかりません
教えてください🙇🏻♀️
285 A が鋭角で, cosA=
(1) sin A
44
7
49+*² = 64
x² = 15
x = √√√5
sinA = 115
15
(3) cos(90° -A)
7
1/2のとき、次の値を求めよ。
(2) tan A
(4) tan (90°-A)
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