find the value of cos^-1 (-π/4)
Answers
Answered by
1
Step-by-step explanation:
It is possible to find the exact value of
cos
(
π
4
)
by constructing a right triangle with one angle set to
π
4
radians.
First, let's convert radians into degrees
π
4
rad
=
π
4
rad
⋅
180
o
π
⋅
rad
−
1
=
45
o
Now let's draw a right triangle with one of the acute angles set to
45
degrees. Remeber that these two angles would be supplementary, meaning that their sum would be
90
o
. As a result, the other angle in this triangle would also be
45
o
, making an isosceles right triangle.
Similar questions