HELPPP
What wavelength of light (in nm) is associated with a frequency of 8.01E15 Hz?

Aplane takes off from an airport and flies to town a, located d1 = 215 km from the airport in the direction 20.0° north of east. the plane then flies to town b, located d2 = 230 km at 30.0° west of north from town a. use graphical methods to determine the distance and direction from town b to the airport. (enter the distance in km and the direction in degrees south of west.)

Determine the maximum r-value of the polar equation r =3+3 cos 0

What are two different ways you could find the value of a? explain these methods.