Question

Use the Law of Cosines to write an expression equivalent to c. Drag the expressions to show what the values of the variables should be in the radical.

Answer 1

Explanation:

recall the formula for law of cosine

`\rm \displaystyle {c}^{} =\sqrt{ {a}^(2) + {b}^(2) - 2ab \cos(C) }`

thus we acquire

• m=a²
• n=b²
• p=2ab
• q=Cos(C)

Answer 2

Solution given:

m=a²

n=b²

p=2ab

q=Cos(C)

law of cosine

`c = √(a²+b²−2abcos(C))`