please help dont just guest on this one its very important somebody guested and it was my only choice to put the answer and i got it wrong so PLEASE DONT GUESS AND GIVE ME AN EXPLAINATION OF HOW YOU GOT THE ANSWER...God bless you..

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations