aoojadi aoojadi

14-02-2017
Physics

Answered

To drive to the store from home, somebody first travels 5 km west, then they travel 5 km northwest. What is the straight line distance between their home and the store?

Verified Answer :

MissPhiladelphia MissPhiladelphia

23-02-2017

straight line distance between their home and the store can be solve using cosine law. first is solve the angle which is180 - 45 = 135 degree
C^2 = a^2 + b^2 - 2ab cos(135)c^2 = 5^2 + 5^2 - 2(5)(5) cos(135)c^2 = 85.35c = 9.24 km is the straight line distance between their home and the store

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