IF AOB - 90° and ab 2:3 find measure of COB
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Step-by-step explanation:
a+b = 90 (complementary angles)
their ratio are 2 to 3
so write them as
2y+3y = 90
5y = 90
y = 15
COB = 3y = 45
Answered by
1
Answer:
54 degrees option b
Step-by-step explanation:
given angle AOB=90°
ratio between a and b is equal to 2:3
consider a=2x and b=3x
a+b=90° => 2x+3x=90 => x=18°
angle COB=b=3x=54°
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