21.
Find K in each of the given
figures.
(1)
30°
K-15
K + 150°
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Step-by-step explanation:
the total sum these should be 360°.
therefore,
30°+k-15°+k+150°+90° = 360°
2k+255 = 360
2k=105
k=105÷2
k=52.5°
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