Answer:
c =
Step-by-step explanation:
Given
R=
Clear the radical by squaring both sides
R² = b² - 4ac ( subtract b² from both sides )
R² - b² = - 4ac ( multiply all terms by - 1 )
b² - R² = 4ac ( divide both sides by 4a )
= c
18 units of whatever the measure is
This is not formatted correctly.
76 degrees and 47 degrees?
Use the law of sines; see the attached picture.