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Good Morning, Precalculus!. To prepare for class: 1. Take out your DO NOW sheet and start today's DO NOW!. Do Now:. Solve for principal values of x. Express your solutions using radians. a) 4sin2x - 1 = 0 b) 2cos2x + cosx - 1 = 0. Do Now. - PowerPoint PPT Presentation
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Good Morning, Precalculus!
To prepare for class:1. Take out your DO NOW sheet and start today's DO NOW!
Do Now:
Solve for principal values of x. Express your solutions using radians.a) 4sin2x - 1 = 0
b) 2cos2x + cosx - 1 = 0
Do NowSolve for principal values of x. Express your solutions using radians.a) 4sin2x - 1 = 0
Do Nowb) 2cos2x + cosx - 1 = 0
CHALLENGE OF THE WEEK!!
CHALLENGE OF THE WEEK!!
In the United States, the “poverty threshold” is $19,090 for a household of 3 people. Currently, the minimum wage is $7.25 an hour.Would one parent working full time (40 hours a week) at a minimum-wage job provide a family of 3 enough money to be considered above the “poverty threshold”? Should the federal minimum wage be raised? Write a one-paragraph “letter” to a government official arguing your point. Provide an argument based on mathematical evidence. P.S., there are 52 weeks in a year.
CRITERIA FOR FULL CREDIT:1. Your response must be written in a letter format, with a proper greeting and signature.2. Your PARAGRAPH must be AT LEAST 5 sentences.3. You must provide mathematical proof, clearly explained in words, for your reasoning.4. The problem is handed in by Wednesday, April 3.
Upcoming Assignments
For Tuesday, 4/2:pg. 459, #17-21
Today's Agenda:1. Do Now2. Today's Objective3. Solving for Principal Values of Trig Equations: Continued4. Practicing with Whiteboards
Today's Objective
Unit 11, Obj. 1: I will be able to solve for the principal values of a
trigonometric equation.
Section 7-5, pgs. 456-461
Solving for Principal Values of Trig Equations: Continued
Practicing with Whiteboards!!
Solve each equation for principal values of x. Express solutions in degrees.
2sin2x - 1 = 0
Solve each equation for principal values of x. Express solutions in degrees.
cosx = 3 cosx - 2
Solve each equation for principal values of x. Express solutions in degrees.
sec2x + tanx - 1 = 0
Solve each equation for principal values of x. Express solutions in degrees.
4sin2x - 4sinx + 1 = 0
Solve each equation for principal values of x. Express solutions in degrees.
cos2x + sinx = 1