Question

find the indicated missing. round your answer to the nearest tenth.
21.0 degrees
67.4 degrees
22.6 degrees

Answer 1

To find the missing angle in a triangle when two angles are known, you can use the fact that the sum of the angles in a triangle is always 180 degrees.

Given the angles:
- Angle A = 21.0 degrees
- Angle B = 67.4 degrees
- Angle C = ? (this is what we're solving for)
- Angle C = 22.6 degrees (it seems there’s a misunderstanding; we need to clarify that we are dealing with the angles you provided more clearly).

Let's clarify what you want. If you want to find an angle C instead of a missing angle, it appears we may not need it, but if you just want to check some values.

If you are asking for the third angle of a triangle given the two angles, the formula would be:

\[
C = 180 - (A + B)
\]

Substituting the values for angles A and B:

\[
C = 180 - (21.0 + 67.4)
\]

Calculate the sum of A and B:

\[
A + B = 21.0 + 67.4 = 88.4
\]

Now, substitute back into the equation for C:

\[
C = 180 - 88.4 = 91.6
\]

So, the missing angle (C) rounded to the nearest tenth is **91.6 degrees**.