For question 3, please do it by using combined vectors and cosine law.For question 4 and 5, please explain them specificly and fully detail.

3. Two tow trucks are pulling on a truck stuck in the mud. Tow truck #1 is pulling with a force of 635 N at 51 from the horizontal while tow truck #2 is pulling with a force of 592 N at 39 from the horizontal. What is the magnitude and direction relative to the horizontal of the resultant force? 4. An object with a mass of 15 kg is being held by two wires making angles of 30 and 15" with the ceiling. Calculate the magnitude of the tension in the wires. {Assume that a 1kg mass exerts a force of 9.8N) 5. A river is 2 km wide and flows at 4 km ih. A motorboat that has a speed of 10 kmih in still water heads out from one bank to a marina that lies directly across the river. on the opposite bank. a. Sketch a diagram. b. At what angle should the motorboat travel to reach the marina? o. How long will it take for the motorboat to reach the other bank