# What's equivalent to = cos theta/1 - sin^2 theta?

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note that the answer must be one of these choices:

a) cos theta

b) csc thata

c) tan theta

d) sec theta

note that the answer must be one of these choices:

a) cos theta

b) csc thata

c) tan theta

d) sec theta

##### 2 Answers

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Somebody N.
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Nov 19, 2017

#### Answer:

d)

#### Explanation:

**(Identity )**

**(Identity)**

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Write your answer here...

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Don't copy without citing sources

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#### Answer

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#### Answer:

#### Explanation

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Jim G.
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Nov 19, 2017

#### Answer:

#### Explanation:

#"using the "color(blue)"trigonometric identities"#

#•color(white)(x)cos^2theta+sin^2theta=1#

#•color(white)(x)sectheta=1/costheta#

#rArr(costheta)/(1-sin^2theta)#

#=(costheta)/(cos^2theta)#

#=1/costheta#

#=sectheta#

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