Questions asked
A skateboarder is setting up two ramps for a jump as shown. He wants to jump off one ramp and land on the other. If the ramps are placed 5 feet apart, at what speed must the skateboarder launch off the first ramp to land on the second ramp?
62. Use the unit circle to verify that the cosine and secant functions are even and that the sine, cosecant, tangent, and cotangent functions are odd.
In Exercises 17-26, evaluate (if possible) the sine, cosine, and tangent of the real number. t= -4pi/3
A sprinkler system on a farm rotates 140 degrees and sprays water up to 35 meters. Draw a diagram that shows the region that can be irrigated by the sprinkler. Then find the area of the region.
A carousel with a 50 feet diameter makes 4 revolutions per minute. Find the angular speed of the carousel in radians per minute. Find the linear speed of the platform rim of the carousel.
THINK ABOUT IT Is a degree or a radian the larger unit of measure? Explain.
In exercises 25-30 estimate the number of degrees in the angle.
Radioactive Decay In Exercises 28, complete the table for the radioactive isotope. 14C 5715 3g
Radioactive Decay In Exercises 25–30, complete the table for the radioactive isotope.
Radioactive Decay In Exercises 19 -22, complete the table for the radioactive isotope.