B b
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Given ∆ABC, sin B= , cos B = , tan B =
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Step 1
Trigonometry is the study of the relationship between the sides and angles of a right-angled triangle.
Angles are measured in degrees or radians.
In a right-angled triangle ABC, if , then AC is the hypotenuse. With respect to , AB is the opposite side and BC is the adjacent side. With respect to , BC is the opposite side and AB is the adjacent side.
In a right-angled triangle for a given acute angle, there are six possible ratios of sides. The values of these ratios are constant. These ratios are called trigonometric ratios.
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