If I am 15 years old I'm a male my dad is 5'8 and I'm 5'9 how can i grow 6'2 inch tall?

I doubt you can gain that much. People in general are getting taller, but that's 5 inches and most people have their full height by 16-17. Your mothers side could add some possibly, but if there are no relatives that are that tall, it would just be a random mutation that caused it. That happens all the time, but it isn't likely.