Solve the problem.If cos ? = 0.7, find the value of cos ? + cos (? + 2?) + cos (? + 4?).
A. 2.1
B. 2.1 + 6?
C. 0.7
D. 4.1
Answer: A
Mathematics
You might also like to view...
Find the perimeter of the parallelogram.
A. 134 m B. 178 m C. 89 m D. 133 m
Mathematics
Use rational equations to solve the problems.A loaded moving truck is traveling 20 mph faster than a freight train. In the time it takes the train to travel 60 miles, the truck travels 100 miles. Find the speed of the truck.
A. 20 mph B. 100 mph C. 50 mph D. 10 mph
Mathematics
Find the exact value of the expression.sin 25° cos 35° + cos 25° sin 35°
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.log3 x + log3(x - 24) = 4
A. {27} B. {53} C. {-3, 27} D. ?
Mathematics