Assume that 0 < ? < ?/2. Find an expression for the indicated trigonometric function.Let x = 8 tan ? in 
. Find cos ?.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Express the number in scientific notation.0.000315
A. 3.15 × 10-3 B. 3.15 × 104 C. 3.15 × 10-4 D. 3.15 × 10-5
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Find the range for the given data set.8, 8, 8, 19, 22, 22, 22
A. 19 B. 30 C. 11 D. 14
Mathematics
Find the derivative of the vector function.
r(t) = a + tb + t²c
Mathematics
Provide an appropriate response.Factor the polynomial completely: 4x2 + 24x + 20
A. 4(x + 1)(x + 5) B. (4x + 5)(x + 1) C. 4(x + 2)(x + 3) D. (4x + 1)(x + 5)
Mathematics