ACTIVITY 4.1 TRIGONOMETRIC RATIOS Activity 1: Matching Test Directions: Use the ABCA below. Match each trigonometric function of an angle in column A to its corresponding value in column B and write the letter of the correct answer on the space provides COLUMN B COLUMN A B 45⁰ 9 m 40 45 41 ACTIVITY 4.2 SPECIAL ACUTE TRIANGLE Find the length of the hypotenuse of the given triangles b. 45⁰ 45° 1. cot A 2. sec B 3. csc A 4. cot B 5. sec A 3√3 60° ACTIVITY 4.3 ANGLE OF ELEVATION and DEPRESSION A. Suppose that when the angle of elevation of the sun is 63.4°, a building casts a shadow of 37.5 feet. How tall is the building? B. From the top of an observation tower, the angle of depression of a campfire is 73". If the base of tower is 534 meters from the campfire, how tall is the tower? A. B. D. E. Find the lengths of the sides represented by the variables s and t. 41 40 9 63.4 =18 01 10 01: 30° 534 m 37.5ft 888 1
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