<PRE><B>Question 1128902</B>
other side = square root(20^2 - 13^2) is approximately 15.20
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the longer leg is not 13 cm
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find angle x in your diagram, cosine of x will be one of the following
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cosine x = 13/20
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cosine x = 15.20/20
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then angle x in degrees will be inverse cosine function of the cosine value
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