Mathematics
Undergraduate
279の（4）の解き方教えてください！
できれば図が欲しいです！
279 0ミの<2z のとき, 次の方程式, 不等式を解け。
(1) cos[29一を)こす パ(2) sin(29+そ)=
3) cos[26+錠) ーデ (4) tan [29
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