### Home > INT2 > Chapter 12 > Lesson 12.1.4 > Problem12-54

12-54.

An isosceles right triangle has a hypotenuse of length $1$ unit. Sketch and label the triangle, including the length of each side. Then use your diagram to determine exact values for the following trig expressions.

1. tan $45°$

$1$

1. sin $45°$

1. cos $45°$