A man rows a boat with a speed of 18 km/...

A man rows a boat with a speed of 18 km/hr in northwest direction. The shoeline makes an angle of `15^(@)` south of west. Obtain the component of the velocity of the boat along the shoreline:

9 km/hr

`18(sqrt(3))/(2) km//hr`

`18 cos (15^(@)) km//hr`

`18 cos (75^(@)) km//hr`

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