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Angle A and angle B are supplementary angles. if Angle A is 35 degrees, how big is angle B (Btw Angle B is just a straight line. Angle A is 35 degrees) Plz help me

Sagot :

bowmaian000

Answer:

145

Step-by-step explanation:

So lets recall what a supplementary angle is. A suppelemenatry angle is  two angles that make up 180 degrees.(half circle)

This is different from a complenenary angle with is two angles that make up 90 degrees(quarter circle)

Ok, so we can write the equation for the supplementary angle as:

35+b=180

Lets subtract the angle we knwo from both sides:

b=145

Now we know that B(second angle) must be equal to 145 degrees.

Hope this helps!

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