Mathematics
Senior High
Resolved

数学です
私の考えのどこが違うのかがわかりません。
どなたか教えていただきたいです。

()s in 75°+s in 120º Cos150°t Cos 165° 模範 Sin 5º Cost5° Cosit5=-Cos 15° よって sinpo-cos 150° 13 ₤4 Sin15º-Cos15° (os (65°tCos 15º==| -Its in Po-Cost50 よって 3 # +3 IT
三角比

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