Answer:
257.8°
Step-by-step explanation:
rad × 180/π = °
4.5*180=810
810/π=257.8
Answer:
mZB= 74
Step-by-step explanation:
ZB+ZA=180
3X-23+2X-12=180
5X-35=180
5X=180+35
5X=215 (then divide both sides by 5 to x be left alone.)
X=43....so ZB=2(43)-12
=86-12=74
Answer:
x = 49.45839812°
Step-by-step explanation:
Formula:

Replace with given values, so

Put in calculator, remember it is is DEGREES not RADIANS
Answer:
