evaluate the following without using a calculator and please explain how
cos(arctan 3)
draw right triangle
adjacent = 1
opposite = 3
hypotenuse = sqrt (10)
cos = 1/sqrt(10) = (1/10)sqrt 10
cos(arctan 3)
adjacent = 1
opposite = 3
hypotenuse = sqrt (10)
cos = 1/sqrt(10) = (1/10)sqrt 10