Use half-angle formulas to find the exact value for the following:
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What will be an ideal response?
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Obtain the Cartesian equation of the curve by eliminating the parameter.x = t - 3, y = t2 + 5
A. y = x2 - 14 B. y = x2 + 14 C. y = x2 + 6x + 14 D. y = x2 - 6x - 14
Evaluate the integral.
4x dx
A. - x cot 4x + ln 
+ C
B. 
x cot 4x - 
ln 
+ C
C. - 
x cot 4x + 
ln 
+ C
D. - 4x cot 4x + 16 ln 
+ C
In ?ABC,AB = 3, BC = 4" and AC = 6". In ?PQR, PR = 6 cm, RQ = 8 cm, and PQ =12 cm. Then
(a) ?ABC ~ ?PQR. (b) ?ABC ~ ?QPR. (c) ?ABC ~?PRQ. (d) ?ABC ~ ?QRP. (e) Because one triangle is measured in inches and the other triangle is measured in centimeters, the corresponding sides are not proportional.
Solve the problem.True or false, given a system of two linear equations in two variables, if the graphs of the two equations coincide, then the system is independent.
A. True B. False