# Is the sine and cosine of a 60 degree angle A in a right triangle always the same?

**Answer**

No.

Here are the “sames'”.

Sin(60 deg) = Cos(30 deg) = 0.866

Sin(30 deg) = Cos(60 deg) = 0.5

Sin(45 deg) = Cos(45 deg) = 0.7071

In general, Sin(x deg) = Cos([90 – x] deg)

For all real x.