Rectangle a is dilated to form rectangle b. what is the scale factor used .
1 answer:
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<u>Answer:</u>
The correct answer option is B. 0.21.
<u>Step-by-step explanation:</u>
We are to find the value of using the law of cosines.
We know that the formula of the cosine rule is given by:
So substituting the given values in the above formula:
cos C = 0.21