VECTORS HELP~~

1 answer:

6 0

R² = 12² + 4² - 2*12*4cos45° 
R² = 92.12 
R = 9.6 mph ===========> ANSWER 

Use law of sines to find bearing 
4/sinA = R/sin45° 
sinA = 4sin45°/9.6 = 0.2946278...... 
A = 17.14° 
bearing = North 17.14° West or 342.86°

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