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Mrs. Magill asks her students to draw a pair of complementary angles with one angle measuring 63°. Which equation and solution process can be used to determine a, the measure of the other angle Mrs. Magill’s students should draw?

Answer choices:
a – 63 = 180; add 63 to both sides of the equation


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


63 + a = 180; subtract 63 from both sides of the equation


a – 63 = 90; add 63 to both sides of the equation

Respuesta :

chipdien123
63 + a = 90; subtract 63 from both sides of the equation.

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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