A cyclist travels 5 miles in the direction cap n 30 degrees cap e , then travels 3 miles in the direction cap n 70 degrees cap e Which equation measures the cyclist’s distance, x , from the starting point?
Answer
A
x squared is equal to 5 squared plus 3 squared minus 2 5 3 cosine open paren 140 degrees close paren
B
5 squared is equal to x squared plus 3 squared minus 2 3 x cosine open paren 140 degrees close paren
C
5 squared is equal to x squared plus 3 squared minus 2 3 x cosine open paren 100 degrees close paren
D
x squared is equal to 5 squared plus 3 squared minus 2 5 3 cosine open paren 100 degrees close paren