If sin(theta) = 3/5 and theta terminates in the first quadrant, find the exact value of cos (2 theta)
a. 3/5
b. 9/25
c. 3/10
d. 7/25

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

Which of the following is correct interpretation of the expression -4+13

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)