Solve, finding all solutions in [0, 2?).2 cos x tan x + 
tan x = 0
A. 0, 
, 
, 
B. 0, ?, 
, 
C. 0, 
, 
, 
D. No solution
Answer: B
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Solve the problem.The figure shown here shows a rectangle inscribed in an isosceles right triangle whose hypotenuse is 10 units long. Express the area A of the rectangle in terms of x.
A. A(x) = 2x2 B. A(x) = 2x(x - 5) C. A(x) = 2x(5 - x) D. A(x) = x(5 - x)
Evaluate the integral.
A. 
B. 
C. 
D. 
Solve the problem.The formula 
is used in electrical engineering. The variables I, V, and Z are complex quantities. Find V for the given values of I and Z, and express the answer in standard form.
A. 28 + 94i B. 94 - 28i C. 28 - 94i D. 94 + 28i
Let a, b, and c represent positive real numbers. Given that quadrilateral ABCD has vertices at A(0,0), B(a,0), C(a+b,c), and D(b,c), explain why ABCD must be a parallelogram.
What will be an ideal response?