- #1

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- 0

## Homework Statement

sqrt((tcost)^2+(-tsint)^2

## Homework Equations

## The Attempt at a Solution

pulled out the sin^2t+cos^2t

added the two t^2

took the sqrt of

t*sqrt(2)

- Thread starter jimbo71
- Start date

- #1

- 81

- 0

sqrt((tcost)^2+(-tsint)^2

pulled out the sin^2t+cos^2t

added the two t^2

took the sqrt of

t*sqrt(2)

- #2

Dick

Science Advisor

Homework Helper

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No, it's not correct. Factor the inside of the sqrt before you start 'pulling things out'.

- #3

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so is the answer simply t

- #4

Dick

Science Advisor

Homework Helper

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Almost right. |t| actually.so is the answer simply t

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