Question

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已知該角為銳角 求解🙏🏻

(2)已知sin+sin20=1,則
0050
1
+
sin +1
1
sin 0-1
COS+
+1+
+ sin³o
=
4## sino-(cos &+1)
姗
Sin³ o cos 0 + sino

Answer 1

✨ Best Answer ✨

qn

直接通分就好

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了解！謝謝