Question

♡

どうしてこうなるのか教えてください😭😭🙏🏻

6
(3) sin 20° +sin 70° +cos 110° + cos 160°
si 90⁰ = ti (90⁰-20°) = (01 20⁰
Cos (180⁰-20°) = -(of 20⁰
C041100-104(900+20°)=120°C(90°−20℃):20°
Cos (60° = Cos ((80° -20°) = - Cof 20⁰
Ai
よって、
tisoº thi 20% e Cos (100+ Cos (80°
A 20° + COF 20° 20° - Co+20°
0
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