The basic angle for 1/2 is 60°, and cosines are negative in the first and third quadrant.
So, you take 180° - 60° = 120° to get the angle in the first quadrant, and 180° + 60° = 240° to get the angle in the third quadrant.
Since only 120° is an option, the answer is
B.
Answer:
5 but its probaly not right bc im just looking for pointsStep-by-step explanation:
Answer:Triangle A: 38 degrees
Triangle B: Unknown (not enough information)
Triangle C: Unknown (not enough information)
Triangle D: 70 degrees
Triangle E: 40 degrees
Step-by-step explanation:
Answer:
-40
Step-by-step explanation:
(-7)(5)-5=-35-5=-40
Answer:
ionno my brein is small
Step-by-step explanation:
sOrRy
