Simplify the expression by using a sum or difference identity.cos (260°) cos (20°) + sin (260°) sin (20°)
A. 
B. - 
C. - 
D. 
Answer: C
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Perform the calculation.180° - 148°52'16"
A. 32°8'44" B. 31°7'44" C. 32°7'44" D. 31°8'44"
Use the given table to find the indicated probability.The following table contains data from a study of two airlines which fly to Smalltown, USA.
P(flight arrived on time ? flight was on Upstate Airlines)?
A. 
B. 
C. 
D. None of the above
Solve.A comet has an orbit that is hyperbolic in shape with Mars as the focus of the hyperbola. The comet heads towards Mars, comes within 280 million miles of Mars, but then veers off as shown in the picture. As it travels into the distance, it moves closer and closer to the line y = 5x. Find the equation that describes the path of the comet. 
A. The equation is 
- 
= 1, where x and y are measured in millions of miles.
B. The equation is 
- 
= 1, where x and y are measured in millions of miles.
C. The equation is 
- 
= 1, where x and y are measured in millions of miles.
D. The equation is 
- 
= 1, where x and y are measured in millions of miles.
Solve.Angle A and angle B are complementary angles and angle A is 10° more than three times angle B. Find the measures of angle A and angle B.
A. A = 30°, B = 60° B. A = 60°, B = 30° C. A = 20°, B = 70° D. A = 70°, B = 20°