blawxsandvich blawxsandvich

09-06-2019
Mathematics

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Need help with this one, no clue how to solve this. If someone could explain what's going on like I'm 5 it'd be much appreciated.

Find x.

Need help with this one no clue how to solve this If someone could explain whats going on like Im 5 itd be much appreciatedFind x class=

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harpazo harpazo

10-06-2019

Question 10

cos 45 = x/10

cos 45(10) = x

(1/sqrt{2})*10 = x

10/sqrt{2} = x

Rationalize the denominator.

[10/sqrt{2}] • [sqrt{2}/sqrt{2}] = x

10•sqrt{2} ÷ 2 = x

5• sqrt{2} = x

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