It seems like you're describing a triangle where two angles are provided: 35 degrees and 40 degrees. To find the missing angle (let's call it \( x \)), you can use the fact that the sum of the angles in any triangle is always 180 degrees.
Here's how you can calculate it:
\[ x + 35^\circ + 40^\circ = 180^\circ \]
Adding the two angles together:
\[ 35^\circ + 40^\circ = 75^\circ \]
Now, substitute back into the equation:
\[ x + 75^\circ = 180^\circ \]
To find \( x \), subtract 75 degrees from both sides:
\[ x = 180^\circ - 75^\circ \]
\[ x = 105^\circ \]
So, the value of \( x \) is \( 105^\circ \).