find the measure of the missing angle.\nanswer attempt 1 out of 2\na = \nsubmit answer
find the measure of the missing angle.\nanswer attempt 1 out of 2\na = \nsubmit answer
Answer
Explanation:
Step1: Identify angle sum property
The sum of angles around a straight line (or in a right - angle related setup here) where we have a right angle ($90^{\circ}$), the given $70^{\circ}$ angle, and angle $a$. The sum of angles in this linear - like arrangement (since the straight line implies a $180^{\circ}$ sum when considering the right angle and the other angles) can be thought of as $a + 90^{\circ}+ 70^{\circ}=180^{\circ}$ (because the angles on a straight line add up to $180^{\circ}$).
Step2: Solve for (a)
We can re - arrange the equation $a+90 + 70=180$ to solve for $a$. First, add 90 and 70: $90 + 70 = 160$. Then, $a=180 - 160$. So, $a = 20^{\circ}$.
Answer:
(20^{\circ})