Practice Questions on Law of Sin and Cos
Q1. Find the value of side a, if the two angles of a triangle are ∠A = 45° and ∠B = 30° and the side between them is b = 6 cm.
Q2. Find the missing side of a triangle having other two sides 12 cm and 9 cm with the angle between them equal to 60°.
Q3. Find the missing side of a triangle having other two sides 11 cm and 5 cm with the angle between them equal to 45°.
Q4. Find the value of side a, if the two angles of a triangle are ∠A = 30° and ∠B = 90° and the side between them is b = 20 cm.
Law of Sine and Cosine
Law of Sine and Cosine are the basic laws or rules used in trigonometry that are used to give the relation between sides and angles of the triangle. In this article, we will learn about the Law of Sine (Sine Rule), Sine Rule Formula, Law of Cosine (Cosine Rule), Cosine Rule Formula, and others in detail.
Table of Content
- What is Law of Sines(Sine Rule)?
- What is Law of Cosine(Cosine Rule)?
- Law of Sine and Cosine Formula
- Examples Using Law of Sine and Cosine
- Practice Questions on Law of Sine and Cosines
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