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Chapter 12: Q2. (page 687)
Tell whether the angles are complementary, supplementary, or neither.
The pair of angles are neither complementary nor supplementary to each other.
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Find the measures of the numbered angles in the diagram.
Given:
Use the diagram. For lines and to be parallel, what must the value of be?
Find the value of xin the figure. Then find the unknown angle measures.
A typical male sprinter can maintain his maximum acceleration for \({\bf{2}}.{\bf{0}}\;{\bf{s}}\), and his maximum speed is \({\bf{10 m/s}}\). After he reaches this maximum speed, his acceleration becomes zero, and then he runs at constant speed. Assume that his acceleration is constant during the first \({\bf{2}}.{\bf{0}}\;{\bf{s}}\) of the race, that he starts from rest, and that he runs in a straight line. (a) How far has the sprinter run when he reaches his maximum speed? (b) What is the magnitude of his average velocity for a race of these lengths: (i) \({\bf{50}}.{\bf{0}}\;{\bf{m}}\); (ii) \({\bf{100}}.{\bf{0}}\;{\bf{m}}\); (iii) \({\bf{200}}.{\bf{0}}\;{\bf{m}}\)?
Find the measures of the numbered angles in the diagram.
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