175k views
1 vote
Three support beams for a bridge form a pair of complementary angles. Find the measure of each angle.Smaller angles:Larger angles:

Three support beams for a bridge form a pair of complementary angles. Find the measure-example-1
User Zhuber
by
7.8k points

1 Answer

2 votes

Answer:

Smaller angles = 39 degrees

Larger angles = 51 degrees

Explanations:

The sum of complementary angles is equal to 90 degrees.

Since the three support beams for a bridge form a pair of complementary angles, hence;


(3x+3)+(5x-9)=90

Simplify and get the value of "x"


\begin{gathered} 3x+5x+3-9=90 \\ 8x-6=90 \\ 8x=90+6 \\ 8x=96 \\ x=(96)/(8) \\ x=12 \end{gathered}

Determine the smaller angles


\begin{gathered} Smaller\text{ angle}=3x+3 \\ Smaller\text{ angle}=3(12)+3 \\ Smaller\text{ angle}=36+3 \\ Smaller\text{ angle}=39^0 \end{gathered}

Determine the larger angle


\begin{gathered} larger\text{ angle}=5x-9 \\ larger\text{ angle}=5(12)-9 \\ larger\text{ angle}=60-9=51^0 \end{gathered}

User Jeff Werner
by
8.7k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories