A Bicyclist had a ride 3 km due East and then 5 km due South.
a) Calculate the magnitude of the resultant vector.
b) Find the direction of the resultant vector.
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Ответ:
RS = 12.2 in ⇒ answer (a)
Step-by-step explanation:
∵ m∠R = 78° , m∠T = 39° , TS = 19
∵ By using sin Rule:
∵ ST/sin∠R = RS/sin∠T
∴ 19/sin78 = RS/sin39
∴ RS = (19 × sin39) ÷ sin 78 = 12.2 in ⇒ answer (a)