Answer:
101 squared not rational
-25 squared is rational
pi or any number times pi is not rational
Step-by-step explanation:
Step-by-step explanation:
sin α - sin β = 2 cos (α + β)/2 sin (α - β)/2
sin 70° - sin 50° = sin 10°
2 cos (70° + 50°)/2 sin (70° - 50°)/2 = sin 10°
2 cos 120°/2 sin 20°/2 = sin 10°
2 cos 60° sin 10° = sin 10°
2 (½) sin 10° = sin 10°
sin 10° = sin 10° → <u>Proved</u>
Answer:
D-124 degrees
Step-by-step explanation:
Answer:
y=-2/3x+13/3
Step-by-step explanation: