Use a special right triangle to find the sine, cosine, tangent, cosecant, secant, and cotangent of π/4.

Question

sin π/4 =

cos π/4 =

tan π/4 =

csc π/4 =

sec π/4 =

cot π/4 =

Answer 1

A right triangle with acute angle of pi/4 is an isosceles right triangle in which the sides are in proportion 1:1:sqrt(2). Knowing that you can easily write the trig functions.