Use Fundamental Identities and/or the Complementary Angle Theorem to find the exact value of the expression. Do not use a calculator.cos 40°sin 50° + sin 40°cos 50°
A. 0
B. -1
C. 2
D. 1
Answer: D
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Solve the problem.Find the values of b and c that make F = 
i + 
j + 
k a gradient field.
Fill in the blank(s) with the appropriate word(s).
The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds). s (m)
What is the body's velocity when t = 8 sec?
A. 3 m/sec B. 0 m/sec C. 4 m/sec D. -4 m/sec
Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.log2
A. 8 log2x + 7 log2y + log25 B. (8 log2x)(7 log2y) - log25 C. 8 log2x - 7 log2y - log25 D. 8 log2x + 7 log2y - log25
For the problem below, ? is a central angle in a circle of radius r. Find the length of arc s cut off by ?. ? ? = 335°, r = 5 inches. ? If the answer needs rounding, round it to three significant digits. ? s = __________ inches
What will be an ideal response?