Unit 19: Lesson 1 Learning Objectives

• Identify the hypotenuse, adjacent side, and opposite side of an acute angle in a right triangle.
• Determine the six trigonometric ratios for a given angle in a right triangle.
• Recognize the reciprocal relationship between sine/cosecant, cosine/secant, and tangent/cotangent.
• Use a calculator to find the value of the six trigonometric functions for any acute angle.
• Use a calculator to find the measure of an angle given the value of a trigonometric function.

• Use the Pythagorean Theorem to find the missing lengths of the sides of a right triangle.
• Find the missing lengths and angles of a right triangle.
• Find the exact trigonometric function values for angles that measure 30°, 45°, and 60°.
• Solve applied problems using right triangle trigonometry.

• Understand unit circle, reference angle, terminal side, standard position.
• Find the exact trigonometric function values for angles that measure 30°, 45°, and 60° using the unit circle.
• Find the exact trigonometric function values of any angle whose reference angle measures 30°, 45°, or 60°.
• Determine the quadrants where sine, cosine, and tangent are positive and negative.