Katie leans a 12-inch ruler against a stack of books that is 7 inch ruler lies right above the edge of the book. What is the angle to the nearest hundredth?

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Answer 1 · 2018-02-24T12:36:39

see a solution step below;

The inch of the book makes the adjacent side while the ruler turns out to be the hypotenuse..

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#costheta = (adj)/(hyp)#

Where;

#adj = 7#

#hyp = 12#

#theta = ?#

#costheta = (7/12)#

#costheta = 0.5833#

#theta = cos-¹(0.5833)#

#theta = 54.32 "derees"#

Hope this helps!