A calculator can be used to find the degree measure of an angle with a given trigonometric ratio. To do so, push 2ND followed by SIN, COS, or TAN. Finally, introduce the value of the given ratio and push ENTER.
about 70.7^(∘)
Practice makes perfect
We can use a calculator to find the degree measure of an angle with a given tangent ratio. To do so, we first push 2ND followed by COS. Finally, introduce the value of the given ratio and push ENTER. Make sure to always check that the calculator is in the correct mode. In this case, we need degrees.
The measure of ∠ D, rounded to the nearest tenth, is about 70.7^(∘).
