Provide an appropriate response.
Find BC. Round to four significant digits.
A. 95.72 m
B. 112.8 m
C. 57.39 m
D. 96.04 m
Answer: B
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Express the sum or difference as a product of sines and/or cosines.cos(4?) - cos(6?)
A. -2 cos(5?) sin ? B. 2 sin(5?) sin ? C. -2 sin(5?) sin ? D. cos(-2?)
Answer the following statement(s) true (T) or false (F)
1. An “exercise” can be solved by simply applying a routine procedure, but a “problem” is not routine and requires a well-thought-out plan of attack. 2. If there are infinitely many numbers involved in a problem, the Guess and Test problem-solving strategy is indicated. 3. If 12 coins are arranged in the shape of an equilateral triangle, then there are 5 coins along each side. 4. If the fourth phase of problem solving,“Looking Back,” we should look for other ways to solve the problem even if we got the ‘right’ answer. 5. When you are asked to make a generalization, you should use the Guess and Test problem-solving strategy.
Fill in the blank with one of the words or phrases listed below. 
An algebraic expression is 
when all like terms have been 
.
A. simplified; constant B. simplified; combined C. constant; simplified D. combined; simplified
Write the complex number in trigonometric form, using degree measure for the argument.-6i
A. 6(cos 90° + i sin 90°) B. 6(cos 0° + i sin 0°) C. 6(cos 270° + i sin 270°) D. 6(cos 180° + i sin 180°)