Use the inverse trig ratios to find the value of x. Round to the nearest tenth

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Place the following steps in order to complete the square and solve the quadratic equation,