The point P on the circle x2 + y2 = r2 that is also on the terminal side of an angle ? in standard position is given. Find the indicated trigonometric function.(5, 12)Find sin ?.
A. - 
B. 
C. 
D. - 
Answer: C
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (1 + 10t2)i + (3 + 11t2)j + (3 + 2t2)k
A. T = 
i + 
j + 
k
B. T = 10i + 11j + 2k
C. T = 
i + 
j + 
k
D. T = 
i + 
j + 
k
Mathematics
Factor. Assume that variables in exponents represent natural numbers.512x3a - 125y3b
A. (8xa + 5yb)(64x2a - 40xayb + 25t2b) B. (8xa - 5yb)(64x2a + 40xayb + 25t2b) C. (8x - 5y)(64x2a + 40xayb + 25t2b) D. (8xa - 5yb)(64xa + 40xayb + 25tb)
Mathematics
Solve the problem.A rectangular garden has dimensions of 17 ft by 14 ft. A gravel path of equal width is to be built around the garden. How wide can the path be if there is enough gravel for 
A. 8.5 ft B. 7 ft C. 8 ft D. 6 ft
Mathematics
Add or subtract as indicated. Write the answer in simplest form.
+ 
A. 
B. 
C. 
D. 
Mathematics