*easier to read from pdf.

 

Math 142  Name:____________________________________ Homework 3 (Spring 2017)

 

Show all work and use pencil only. Write your solutions up neatly on separate sheets of the engineering paper (use blank side only) and staple this sheet on top. Five (5) points will be deducted if your overall presentation is not neat, clear, and concise. 

 

1. [4 points] Verify the identity. 

secx-1 secx+1

secx+1  secx-1 =−4csc????cot????

 

 

 

2. [4 points] Verify the identity. 

sinx + cosx  

1-cotx 1-tanx =sin????+cos????

 

***Also a third question in the pdf with a picture the text is as follows:

 

In the following figure AB = CD = 1 and BC = 2, find alpha + beta and express your answer using radian measure. Do not use decimals. give the exact value. hint: find cos(alpha+beta)

• 1503154391-Math 142 HW 3 Spring 2017.pdf

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