Chapter 1
Algebra
Course: Sat Prep
Subject: Math
Chapter: Geometry And Trigonometry
By the end of this lesson, you should be able to:
- Identify the sides of a right triangle relative to a given angle.
- Apply the sine and cosine ratios to solve right triangles.
- Find unknown side lengths using trigonometric ratios.
- Determine unknown angle measures using inverse trigonometric functions.
- Recognize and apply special right triangle relationships.
Trigonometry is the branch of mathematics that studies the relationships between the sides and angles of triangles. Trigonometry questions almost always involve right triangles, which contain one angle measuring exactly 90°. Instead of measuring every side directly, trigonometric ratios allow you to determine unknown lengths or angles using information that is already known.
Before using trigonometric ratios, you must first identify the three sides of a right triangle.
- Hypotenuse - the longest side, opposite the right angle.
- Opposite side - the side directly across from the reference angle.
- Adjacent side - the side next to the reference angle that is not the hypotenuse.