Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.cos ? = - 
, ? in quadrant II Find cos 2?.
A. 
B. - 
C. - 
D. 
Answer: B
Mathematics
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For the curve r(t), write the acceleration in the form aTT + aNN.r(t) = (cosh t)i + (sinh t)j + tk
A. a = (- 
sinh t)T + N
B. a = (
sinh t)T + N
C. a = (-sinh t)T + N
D. a = (sinh t)T + N
Mathematics
Convert the length as indicated.20.3 miles to yards
A. 107,184 yd B. 60.9 yd C. 35,728 yd D. 243.6 yd
Mathematics
Sketch the curve.
?
?
?
A. 
B. 
C. 
D. 
Mathematics
Write the expression in the standard form a + bi.If z = 6 - 2i, evaluate z + 
.
A. 12 + 4i B. -4i C. 12 D. 12 - 4i
Mathematics