Find θ when l = 45cm and r = 9cm?
Find θ when l = 45cm and r = 9cm?
Explanation
The formula relating arc length (l), radius (r), and central angle (θ) is:
l = rθ
Given:
l = 45 cm
r = 9 cm
θ = l / r
= 45 / 9
= 5 radians
The formula relating arc length (l), radius (r), and central angle (θ) is:
l = rθ
Given:
l = 45 cm
r = 9 cm
θ = l / r
= 45 / 9
= 5 radians