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kirill115 [55]
3 years ago
10

♥|| Please help me A.S.A.P i will make you brainliest!||♥

Mathematics
2 answers:
dmitriy555 [2]3 years ago
5 0
63 + a = 90; subtract 63 from both sides of the equation.
Taya2010 [7]3 years ago
4 0

Answer:

Option B, 63 + a = 90; subtract 63 from both sides of the equation

Step-by-step explanation:

When the sum of two angles is equal to 90 degrees, they are called complementary angles.

Here, we  know the one angle measure is 63°

Let's consider unknown angle as a.

63 °+ a = 90°

63 °+ a -63° = 90° - 63° ( subtract 63 from both sides of the equation)

a = 90° - 63°

a = 27°

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