Question

find the arctan of 1 without a calculator

Answer 1

tan(t) = opposite / adjacent = 1 / 1 = 1
ABC is a right triangle with angle B = 90 degrees.
AB = BC (isosceles triangle)
Therefore, angle A = angle C.
angles A + B + C = 180
A + 90 + A = 180
2A = 90
A = 45 degrees

So arctan(1) = 45 degrees.

Answer 2

i just wanted to make sure if its pi/4.

Answer 3

Yes. pi/4 radians or 45 degrees.

Answer 4

ok,thnku very much 4 helping me once again:)

Answer 5

you are welcome.