Question

Evaluate cot 45° without using a calculator by using ratios in a reference triangle.

Answer 1

cot(45) = cos(45) / sin(45)
cos(45) = sin (45)

So, cot(45) is equal to 1

Answer 2

cos (45) = sqrt[2] / 2
sin (45) = sqrt[2] / 2

Answer 3

Theres more? I thought that was it D:

Answer 4

no, im just showing you why cos(45) = sin(45)

Answer 5

Oh, Okay! Well thank you!

Answer 6

yw