Full steps thanks 四1.Use sum or difference formulas and special triangles to determine the exact value of sin12

Answered: Use sum or difference formulas and…

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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四
1.
Use sum or difference formulas and special triangles to determine the exact value of sin
12

Expert Solution

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 $m ∠ A B C = 90^{\circ}$ , then AC is the hypotenuse. With respect to $∠ A C B$ , AB is the opposite side and BC is the adjacent side. With respect to $∠ B A C$ , BC is the opposite side and AB is the adjacent side.

In a right-angled triangle for a given acute angle, $∠ B A C$ there are six possible ratios of sides. The values of these ratios are constant. These ratios are called trigonometric ratios.