Evaluate each of the following expressions by using special right triangles and the unit circle (give exact values), a. sin(4pi/3)
b. cos(11pi/3)
c. sin ( -5pi/6 )
d. cos (-2pi/3)

Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?

Describe the relationship between the angles of similar triangles and the sides of similar triangles

Acircle has a circumference of 28.36 units what is the diameter of the circle