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Get Full Access to Elementary Linear Algebra With Applications - 9 Edition - Chapter 1.5 - Problem 20
Get Full Access to Elementary Linear Algebra With Applications - 9 Edition - Chapter 1.5 - Problem 20

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# Describe all skew syr.lmetric scalar m:ltrices

ISBN: 9780132296540 301

## Solution for problem 20 Chapter 1.5

Elementary Linear Algebra with Applications | 9th Edition

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Elementary Linear Algebra with Applications | 9th Edition

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Problem 20

Describe all skew syr.lmetric scalar m:ltrices.

Step-by-Step Solution:
Step 1 of 3

Trigonometry Notes Chapter 2 Section 1&2 Pythagorean Identities: Sin θ+Cos θ=1 Tan θ+1=Sec θ 2 1+Cot θ=Csc θ 2 Conjugates: 2 2 A+B--------A-B so (a+b)*(a-b)=a -b Verify the Identity: sinθ 1+cosθ = Binomial in the denominator is not good 1−cosθ sinθ sinθ ∗(1+cosθ) 1−cosθ Multiply by conjugate (1+cosθ) sinθ(1+cosθ) 2 (1-cosθ)(1+cosθ)=sin2θ because 1-cosθ=sinθ sin θ 1+cosθ 1+cosθ = Factor out sinθ sinθ sinθ Replace with single term: Tan θ+1=Sec θ 2 Sec θ+1=N/A Verify the Identity: tanθ secθ−1 =cscθ+cotθ Left side tanθ ∗(secθ+1) secθ−1 Multiply by the conjugate (secθ+1) tanθ(secθ+1) 2 (secθ­1)(secθ+1)=tan θ tan θ secθ+1 tanθ Factor out tanθ 1 cosθ +1 Express as sin and cos sin cos 1 +1 ∗ cosθ Multiply (cosθ )( sinθ 1 cosθ 1 + cosθ over cosθ cancels leaving sinθ sinθ sinθ cscθ+cotθ=cscθ+cotθ Simplify Verify the identity: 2 tanθ+cotθ= tan

Step 2 of 3

Step 3 of 3

##### ISBN: 9780132296540

Since the solution to 20 from 1.5 chapter was answered, more than 244 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: Elementary Linear Algebra with Applications, edition: 9. Elementary Linear Algebra with Applications was written by and is associated to the ISBN: 9780132296540. The full step-by-step solution to problem: 20 from chapter: 1.5 was answered by , our top Math solution expert on 01/30/18, 04:18PM. This full solution covers the following key subjects: . This expansive textbook survival guide covers 57 chapters, and 1519 solutions. The answer to “Describe all skew syr.lmetric scalar m:ltrices.” is broken down into a number of easy to follow steps, and 6 words.

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