뒤로
문제 58
Convert each radian measure to degrees. Write answers to the nearest minute. See Example 2(c).
5
문제 60
Convert each radian measure to degrees. Write answers to the nearest minute. See Example 2(c).
3.06
문제 61
Convert each radian measure to degrees. Write answers to the nearest minute. See Example 2(c).
0.3417
문제 62
Convert each radian measure to degrees. Write answers to the nearest minute. See Example 2(c).
9.84763
문제 63
Convert each radian measure to degrees. Write answers to the nearest minute. See Example 2(c).
-5.01095
문제 67
Find each exact function value. See Example 3.
sin π/3
문제 69
Find each exact function value. See Example 3.
tan π/4
문제 71
Find each exact function value. See Example 3.
sec π/6
문제 73
Find each exact function value. See Example 3.
sin π/2
문제 75
Find each exact function value. See Example 3.
tan 5π/3
문제 77
Find each exact function value. See Example 3.
sin 5π/6
문제 79
Find each exact function value. See Example 3.
cos 3π
문제 81
Find each exact function value. See Example 3.
sin (-8π/ 3)
문제 83
Find each exact function value. See Example 3.
sin (-7π/ 6)
문제 85
Find each exact function value. See Example 3.
tan (-14π/ 3)
문제 90
Give an expression that generates all angles coterminal with an angle of π/2 radians. Let n represent any integer.
문제 92
Through how many radians does the minute hand on a clock rotate in (a) 12 hr and (b) 3 hr?
문제 1
CONCEPT PREVIEW Find the exact length of each arc intercepted by the given central angle.
문제 2
CONCEPT PREVIEW Find the exact length of each arc intercepted by the given central angle.
문제 3
CONCEPT PREVIEW Find the radius of each circle.
문제 4
CONCEPT PREVIEW Find the radius of each circle.
문제 5
CONCEPT PREVIEW Find the measure of each central angle (in radians).
문제 6
CONCEPT PREVIEW Find the measure of each central angle (in radians).
문제 7
CONCEPT PREVIEW Find the area of each sector.
문제 8
CONCEPT PREVIEW Find the area of each sector.
문제 13
Find the length to three significant digits of each arc intercepted by a central angle in a circle of radius r. See Example 1. r = 12.3 cm , θ = 2π/3 radians
문제 15
Find the length to three significant digits of each arc intercepted by a central angle in a circle of radius r. See Example 1. r = 1.38 ft , θ = 5π/6 radians
문제 17
Find the length to three significant digits of each arc intercepted by a central angle in a circle of radius r. See Example 1.
r = 4.82 m , θ = 60°
문제 19
Find the length to three significant digits of each arc intercepted by a central angle in a circle of radius r. See Example 1.
r = 15.1 in. , θ = 210°
문제 21
Concept Check If the radius of a circle is doubled, how is the length of the arc intercepted by a fixed central angle changed?