Mathematics
Senior High
Solved
xの値をだしたいんですが、回答の意味がよくわかりません、わかる方教えていただきたいです。
(3) やや難
25°
y
032°
x
N=1020
(1) 2x=360° - (2 x 80°) = 200°
4x=90° -20° 70°
2x+32° = 25 +32" X2
ZBCA: ZCAB: ZABC=3:4:5
(2)
(3)
(4)
よって
I
2x=<CAB=180° X
2
2x=57°
12
60°.
Answers
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なるほど!ありがとうございます!