# Quiz for MTH 120 - Pre-Calculus II at Essex County College (ESSEX)

## Quiz Information

 Material Type: Quiz Professor: Staff Class: MTH 120 - Pre-Calculus II Subject: Mathematics University: Essex County College Term: Summer I 2005 Keywords: Final AnswersYou Have...Mathematics

## Sample Document Text

MTH 120 - Summer - 2005 Essex County College - Division of Mathematics Quiz # 31 - Printed May 16, 2005 Name: Signature: Show all work clearly and in order, and box your final answers. Justify your answers algebraically whenever possible. You have 20 minutes to take this 10 point quiz. When you do use your calculator, sketch all relevant graphs and write down all relevant mathematics. 1. Find the numerical coefficient of the term whose variable part is x6y3 in the expansion of (x ? 2y)9 . Solution: parenleftbigg 9 6 parenrightbigg (x)6 (?2y)3 = 84 · (?8)x6y3 = ?672x6y3 So, the numerical coefficient is ?672 . 2. Convert each of the following angle measures to radian measure. (a) 60? = Solution: 60? = 60? · parenleftBig pi 180? parenrightBig = pi3 (b) 90? = Solution: 90? = 90? · parenleftBig pi 180? parenrightBig = pi2 (c) 50? = Solution: 50? = 50? · parenleftBig pi 180? parenrightBig = 5pi18 1This document was prepared by Ron Bannon using LATEX2?. 1 ...