Find the Sin, Cos, and Tan of the following angle:

-45 degrees

i have my teachers work here but i just don’t know the explanation of how to solve it

pleasee explain to me how to do this like my tecaher did

Solution:

In the given right triangle,

θ = 45°

Opposite side to θ = –1

Adjacent side to θ = 1

Hypotenuse =

Using basic trigonometric ratio formulas,

Therefore,

expression #3 is not equivalent. the others are.

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80