Verify that the equation is an identity.cos(x - y) - cos(x + y) = 2 sin x sin y
What will be an ideal response?
cos (x - y) - cos (x + y) = cos x cos y + sin x sin y - ( cos x cos y - sin x sin y) = 2 sin x sin y.
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Provide an appropriate response.Evaluate: 3(62 + 44)
Fill in the blank(s) with the appropriate word(s).
Express the number in decimal notation.4.14 × 10-4
A. 0.0000414 B. -414,000 C. 0.000414 D. 0.00414
On-The-Go Merchandiser sells luxury carry-on travel bags for $1,200 each. The firm's fixed operating costs are $600,000 when 5,000 or fewer bags are produced, and its variable cost ratio is 80 percent (i.e., variable cost per unit is 80 percent of the selling price). What is On-The-Go's operating breakeven point?
A. 500 bags B. 6,000 bags C. 750 bags D. 2,500 bags E. 4,000 bags
Considering the given value of t, choose the ordered pair that lies on the graph of the given pair of parametric equations.x = sin t, y = cos t; t = 
A. (-1, 0) B. (0, -1) C. (0, 1) D. (1, 0)