Question

Which of the following is an equivalent trig ratio for sin 60.

sin 30
cos 30
cos 60
1/sin60

Answer 1

The equivalent to sin 60 is cos 30

Explanation:

we can obtain our answer either from calculator

or from four figure table

from calculator punching sine 60 will display 0.8660

likewise cosine 30 will display 0.8660

Hence both trigonometric values are equivalent