Please explain answer(show your work)

Find the tangent line to y = {/37 at x = 27 and use it to approximate v3 26.972. Your final answer should be a decimal value. Two airplanes are flying in the air at the same height: airplane A is flying east at 500 km/h and airplane B is flying north at 600 km/h. If they are both heading to the same airport, located 60 kilometers east of airplane A and 40 kilometers north of airplane B, at what rate is the distance between the airplanes changing