February 19, 2017

Homework Help: trigonometry

Posted by Stephen on Wednesday, December 12, 2012 at 10:10am.

How do i do them? :l

7. At 2:00 P.M., the angle between the hour and minute hands on a clock is 60° (approximately 1.05 radians). The arc length formed by the two hands is 2.63
inches. What is the radius of the clock in inches? (Round to the nearest tenth.)

10. A pulley with a radius of 8 inches rotates three times every five seconds. Find the angular velocity of the pulley in radians/sec (round to the nearest hundredth). Find the linear velocity to the nearst ft/hr.

13. The Earth travels in a circular orbit around the Sun at 29.79 km/sec. If the radius of the orbit is 1.496x10^8km, what is the angular velocity in radians/sec? (Round to three significant digits.)

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