10. Prove that the angle between the two tangents drawn from an external point to a circe
is supplementary to the angle subtended by the line-segment joining the points
contact at the centre.
Answers
Answered by
9
Step-by-step explanation:
在四邊形OAPB中
OAP + 2APB + 208P + 2 AOB = 360
（角度總和
四邊形）
放置角度值
90+ APB + 90 + 2AOB 360
180 + 2 APB + 2A0B = 360
L APB + 4 AOB = 360°-180
APB + 2AOB= 180
因此證明
Answered by
5
Answer:
chaneeza
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