If four times the supplement of an angle is added to eight times the angle's complement, the sum is equivalent to three straight angles. Find the measure of teh angle that is supplmentary to the complement.

odigavz

odigavz

Answered question

2022-08-02

If four times the supplement of an angle is added to eight times the angle's complement, the sum is equivalent to three straight angles. Find the measure of teh angle that is supplmentary to the complement.

Answer & Explanation

Payton Mcbride

Payton Mcbride

Beginner2022-08-03Added 18 answers

The supplement of an angle is 180 minus the angle;
The complement of the angle is 80 minus the angle;
and a straight angle is 180 degrees.
Here's the formula you would use:
4(180-A) + 8(90-A) = 3(180)
From there, you just solve for A.
720 - 4A + 720 - 8A = 540
1440 - 12A = 540
-12A = -900
A = 75 degrees
garkochenvz

garkochenvz

Beginner2022-08-04Added 2 answers

This geometry problem has an algebraic aspect to it.hopefully youknow that supplement angles add up to 180 degrees and complementsadd up to 90 degrees and straight angles are 180 degrees.
so...
3(straight angles)=4(supplements)+8(complements)
Let θ be the angle.
3 ( 180 ) = 4 ( 180 θ ) + 8 ( 90 θ )
540 = 720 4 θ + 720 8 θ
12 θ = 900
θ = 75 degrees!

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