True
because slope are opposite reciprocal of one another.
Answer:
Step-by-step explanation:
=\left(21\left(-3\right)-\left(-3\right)\cdot \:9\right)+\left(21\cdot \:9+\left(-3\right)\left(-3\right)\right)i
He assumes that 60-x and 2x-6 are vertical angles, so he equated these two expressions.
60-x=2x-6
60+6=2x+x
66=3x
x=22
Answer:
42°, 101°
Step-by-step explanation:
These answers come from the angle subtraction postulate.
Answer: 86pi
Step-by-step explanation:
