How do you find the value of cos(pi/4)?
2 Answers
You would look on the unit circle.
Explanation:
!unit circle
Explanation:
It is possible to find the exact value of
First, let's convert radians into degrees
Now let's draw a right triangle with one of the acute angles set to
An isosceles right triangle with side lengths 1, 1 and sqrt(2)- created with Google Drawings- own work
By setting the length of one of the sides adjacent to the right angle to
Thus