3 years ago

I don't know how to solve this:

Mathematics

1 answer:

kvasek [131]3 years ago

4 0

Answer:

18, 72

Step-by-step explanation:

Two angles are complementary if they sum up to 90°. Call them $x, (90-x)$ . From the second part,

$3 x = 90-x+18 \\4x = 72 \\x= 18$

The second angle is $90-18 = 72$

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