Select the functions that have identical graphs.(i) y = cos x(ii) y = sin x(iii) y = sin 
A. i, ii and iii
B. i and iii
C. ii and iii
D. i and ii
Answer: B
Mathematics
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Determine the value of the indicated function in the given manner.Find tan 120° by using the functions of 60°.
A. 
B. -
C. - 
D. -1
Mathematics
Use logarithmic differentiation to find the derivative of y.y = x(x - 7)(x - 1)
A. 1
B. x(x - 7)(x - 1)(lnx + ln(x - 7) + ln(x - 1))
C. 
+ 
+ 
D. x(x - 7)(x - 1)
Mathematics
Determine the x- and y- intercepts for the graph defined by the given equation.x = 8
A. x-intercept is (8, 0) No y-intercept B. x-intercept is (0, 8) No y-intercept C. No x-intercept y-intercept is (0, 8) D. No x-intercept y-intercept is (8, 0)
Mathematics
Solve the system of equations using Cramer's Rule, if applicable.
A. 
B. {(x, y)| 5x - 8y = 7}
C. ?
D. (2, 3)
Mathematics