Answer:
(a) 1/2
Step-by-step explanation:
The coordinates of the point of intersection of the terminal side of angle α with the unit circle are ...
(x, y) = (cos(α), sin(α))
When α = 60°, the x-coordinate of the terminal point is cos(60°) = 1/2.
Answer:
x= all real numbers
y= all real numbers
Step-by-step explanation:
Answer: 9 mm
Explanation:
a² + b² = c²
8² + 5² = c²
c² = 64 + 25
c² = 89
c= √89
c = 9 mm (nearest whole number)
Answer:
radius = 5
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
(x - 5)² + (y + 3)² = 25 ← is in standard form
with r² = 25 ⇒ r = = 5