Answer:
cos R = .38
Step-by-step explanation:
First you need to find the length of the hypotenuse.
Use a squared + b squared = c squared
100 + 576 = c squared
square root of 676 is 26
CosR is adjacent over hypotenuse.
Adjacent is 10
Hypotenuse is 26
10/26 = .38
I got it as 4 when calculating all have the same number which is 133
Answer: Pretty sure it would look like this
Step-by-step explanation:
The other two angles would also be 120 and 40 because the opposite angles of parallelograms are equal
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