# Quiz for MATH 1321 - Trigonometry at Texas Tech (TTU)

## Quiz Information

 Material Type: Quiz 7 Professor: Staff Class: MATH 1321 - Trigonometry Subject: MATHEMATICS University: Texas Tech University Term: Fall 2002 Keywords: InstructionsIn Front OfIn Front (of)Trigonometry

## Sample Document Text

Math 1321 Quiz 7 Name: October 4, 2002 Instructions: 1. Be sure to show all your work, NO WORK = NO CREDIT!! 2. Read all questions carefully and be sure to give the result wanted. 3. Box in or highlight your flnal answer. NO BOX = NO CREDIT 1. Exercise 3.4, Problem 12: Solve the following triangle for a = 0:02736; A = 28:28o; C = 81:70o Solution: B = 180¡28:28¡81:70 = 70:02o b = (0:02736) sin70:02 o sin28:28o = 0:05427 c = (0:02736) sin80:70 o sin28:28o = 0:05689 2. Exercise 3.4, Problem 16: A train is moving at 60 mph on a straight track in the direction N 37o W. The sun, setting in the direction N 80o W, casts the train's shadow onto the front of a building that faces due west. How fast is the train's shadow moving? 37 100 43 60 c TrainShadow N W 37 Sun c = 60sin43 o sin100o = 41:55 . 42mi/hr The train's shadow is moving at 42 miles per hour. 1 ...