Using the cosine double angle formula,

(Note I took the positive case since
terminates in the first quadrant)
Using the Pythagorean identity,

(Note I took the positive case since
terminates in the first quadrant)
Answer:
The second graph near the bottom with a Y-intercept of -1
Two angles are supplementary when they <span>add up to 180 degrees.
x = angle
19x-60 = </span><span>supplement angle
x + 19x - 60 = 180
20x = 180 + 60
20x = 240
x = 240/20
x = 12</span>° ← answer
Answer:
log5(125)=3 The 5 should be smaller and a little lower.
Step-by-step explanation:
Answer:
You don’t need help
Step-by-step explanation: