Only two of the 5 numbers below are not equal in value. Which ones? (All functions are in degrees.)
tan 3, tan 30, tan 300, tan 3000, tan 30000
According to my calculator
tan 3 = 0.0524
tan 30 = 0.5774
tan 300 = –1.7321
tan 3000 = –1.7321
tan 30000 = –1.7321
.
Tan repeats itself every 180 degrees
(3000 - 300 )/180 = 15 so these two are equal
(30000-300)/180 = 165 equal
so 300 3000 30000 tan's are equal (as guest found)