Answer:
[tex]s=1[/tex]
Step-by-step explanation:
Using the diagram, we can see that the angle is a right angle.
With this information, we can set up an equation:
[tex]77+8s+5=90[/tex]
Please note that right angles are always equivalent to 90 degrees.
[tex]77+8s+5=90[/tex]
Add like terms:
[tex]82+8s=90[/tex]
Subtract 82 from both sides:
[tex]8s=8[/tex]
Divide both sides by 8
[tex]s=1[/tex]
