Mathematics
Senior High
Resolved
どうやってこの変形になるのでしょうか。教えてください🙏🙏🙇♀️
105°+15°
105°-15°
88
(2) sin 105° + sin 15°=2sin
COS
2
2
=2sin 60°cos 45°
√3 1 V6
=2.
2 √2
2
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