August 25, 2016

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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