Homework Help Forum: trig

Posted by Anonymous on Monday, November 2, 2009 at 4:19pm.

At the winter solstice, the power, in watts, received from the Sun on each square metre of Earth's surface can be modelled by the formula P = 1000sin (x + 113.5 degrees), where x represents the angle of latitude in the northern hemisphere. a) Determine the angle of latitude at which the power level drops to 0. b) Determine the angle of latitude at which the power level is a maximum. Explain what is meant by the negative sign.

• trig - bobpursley, Monday, November 2, 2009 at 4:29pm

  Set power to zero. sin(x+113.5) so x must be 180-113.5 Maximum? x must be 90-113.5 I am quite uncertain what you are missing here.

  
  

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