Question

which expression is equivalent to cos 340°?
a.) -cos20°
b.) cos20°
c.) cos160°

Answer 1

Cos 340 is 20 away from 360. Since we know that any degree that is the same distance from the origin , 0, are equal; cos 60 = cos -60, and that cos 340 is 20 away from 360, it equals cos-20, which in turn, equals cos 20

Answer 2

Thanks!!!!!!!!!!

Answer 3

Yw, if you want more elaboration or have more questions, feel free to ask.

Answer 4

WiIl do :D