To solve quadratics, the most correct and effective way, in my opinion, is the quadratic formula:

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Plugging it in, we get:
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So the final answer is:

and
This isnt something I can do... But draw and label a tape diagram that goes from 0 to 30.
Answer:
Step-by-step explanation:
a,a, and a
x = 64°
Step-by-step Explanation
x = 1/2[(360° - 2*58°)-2*58°]
x = 1/2[(360° - 2*58°) - 2*58°]
x = 1/2[(360° - 116°) - 116°]
x = 1/2[244° - 116°]
x = 1/2[128°]
x = 64°