Find the length of the third side of the right triangle. Assume that c represents the length of the hypotenuse. Give an exact answer and, if appropriate, an approximation to three decimal places.a = 1, c = 21
A. b = 
; b ? 4.472
B. b = 20
C. b = 
; b ? 20.976
D. b = 
; b ? 21.024
Answer: C
Mathematics
You might also like to view...
Find the area of the shaded region in the figure. Round results to the nearest unit.Find the area of the shaded portion of the circle. Use 3.14 for ?. Figure not drawn to scale.
A. 254.34 cm2 B. 17.415 cm2 C. 81 cm2 D. 46.17 cm2
Mathematics
Graph.f(x) = -5x + 4
A. 
B. 
C. 
D. 
Mathematics
Find the exact value of the expression.cos 
cos 
+ sin 
sin 
A. 1
B. 
C. 
D. 
Mathematics
Decide whether the statement is possible or impossible for an angle ?.sec ? = 0.97
A. Impossible B. Possible
Mathematics