Answer:
The value of x is 0
Step-by-step explanation:
Hello,
cos 160°=-q
cos 20°=-cos 160°=q
sin 20°=√(1-q²)=sin 160°
tan -20°=tan 160=√(1-q²)/-q
cos 70°=sin 20°=√(1-q²)
Set up an equation to solve.
70% of original price equals $550, the amount Susan is paying.
0.70x = 550
