Verify the identity.sin4t = 2 sin2t cos2t
What will be an ideal response?
sin 4t = sin [2(2t)] = 2 sin2t cos2t.
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Simplify.-(3)0
A. -1 B. 3 C. 0 D. 1
Use a calculator to evaluate the expression. Round your answer to the nearest thousandth.
A. 9.799 B. 9.762 C. 8.775 D. 6.304
Solve the problem.Two pulleys of diameter 9 m and 3 m are connected by a belt. The larger pulley rotates 44 times per min. Find the angular velocity of the smaller pulley.
A. 132? radians/min B. 396? radians/min C. 198? radians/min D. 264? radians/min
Solve the problem.A real estate development consists of home sites that range in width from 59 to 115 feet and in depth from 135 to 191 feet. Using x as the variable in both cases, write absolute value inequalities that correspond to these ranges.
A. |B - 56| ? 59, |x - 56| ? 135 B. |x - 87| ? 28, |x - 163| ? 28 C. |x - 28| ? 87, |x - 28| ? 163 D. |B - 59| ? 56, |x - 135| ? 56