Skip to main content
Ch. 3 - Radian Measure and The Unit Circle
Lial - Trigonometry 12th Edition
Lial12th EditionTrigonometryISBN: 9780136552161, 9780135440780, 9780136881117, 9780135440827, 9780135924891당신이 사용하는 게 아니라요?교과서 변경
4장, 문제 3.55

Find the approximate value of s, to four decimal places, in the interval [0, π/2] that makes each statement true.
cot s = 0.5022

검증된 단계별 안내
1
Recognize that \( \cot(s) = \frac{1}{\tan(s)} \). Therefore, \( \tan(s) = \frac{1}{0.5022} \).
Calculate \( \tan(s) \) using the reciprocal of 0.5022.
Use a calculator to find the angle \( s \) in radians for which \( \tan(s) \) equals the calculated value.
Ensure that the angle \( s \) is within the interval \([0, \frac{\pi}{2}]\).
Round the value of \( s \) to four decimal places.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Cotangent Function

The cotangent function, denoted as cot(s), is the reciprocal of the tangent function. It is defined as cot(s) = cos(s)/sin(s). In the context of the unit circle, cotangent represents the ratio of the adjacent side to the opposite side in a right triangle. Understanding cotangent is essential for solving equations involving angles and their trigonometric ratios.
추천 영상:
5:37
Introduction to Cotangent Graph

Inverse Trigonometric Functions

Inverse trigonometric functions, such as arccot or cot^(-1), are used to find the angle that corresponds to a given trigonometric ratio. For example, if cot(s) = 0.5022, we can use the inverse cotangent function to determine the angle s. These functions are crucial for solving equations where the angle is unknown and must be derived from a known ratio.
추천 영상:
4:28
Introduction to Inverse Trig Functions

Interval [0, π/2]

The interval [0, π/2] represents the range of angles from 0 to 90 degrees, where all trigonometric functions are positive. This interval is significant when solving trigonometric equations because it restricts the possible values of s, ensuring that the solution is within the first quadrant. Understanding the implications of this interval helps in determining the correct angle that satisfies the given cotangent value.
추천 영상:
1:48
Example 2