Mathematics
Senior High
練習14(１)の答えは2つなのに、練習15の(１)の答えは1つです。なぜ15の(１)の答えは2つじゃないのでしょうか。
練習
0°%0s180° のとき, 次の等式を満たす0を求めよ。
1
(2) cos0 = I
2
14
13
(1) sin0=
2
9 26.120°
68、1
15
(1) tan0=1
1
(2) tan0=
3
6-45°
Answers
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