Question

4.24sin[10(pie)t] + 4.24cos[10(pie)t] = ???

Answer 1

lets see sin[10(pie)t] if we take t=0,1,2,3.... then bracket term becomes 0,10 pie, 20 pie,.... value of sin10 pie, sin20 pie .... is same of sin0 which is=0 so first term is =0 now i hope you can figure out second term by applying same method as above.

Answer 2

hi my penguin ;)

Answer 3

@cwrw238 ;)