5.6 Assignment

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MCR3U UNIT 5–TRIG FUNCTIONS NAME: ASSIGNMENT #3 DATE: Knowledge/Understanding Thinking/Inquiry Communication Application /16 /5 /9 Note: 5 Communication marks will be given overall for the clarity of your answers including conciseness, organization, proper mathematical form and notation. 1. Solve 2tan 2 2 θ + tan2 θ− 1 = 0 for to the nearest tenth of a degree for 0 0 ≤θ≤ 90 0 . [A:2] 2. Solve 6sin 2 θ− 5sin θ + 1 = 0 for to the nearest degree for 0 0 ≤θ≤ 360 0 . [A:3] 3. Prove the identity tanβ sec β− 1 + tanβ sec β + 1 = 2sinβcosβ cos 2 β 1 cosβ ( ) 4 2sinβcosβ . [A:4] 4. Angle is in standard position on a coordinate grid. The terminal arm of is in Quadrant II on the line with equation 3y + 2x = 0 . Determine the measure of . Include a diagram in your solution. [T/I:4] 5. If csc θ = 89 8 , and is an angle in standard position, determine all possible values of for 540 0 ≤θ≤ 270 0 [T/I:4] 6. Determine the number of triangles that could be drawn for ΔABC if B = 20 0 , c = 5cm and b = 2cm . Find the measures of the other angles and the other side of each possible triangle. Round to the nearest tenth, if necessary. [T/I:4] 7. What is the measure of the smaller angle between the hour hand and the minute hand of a 12hour clock at 8:50? What is the distance of the tips of the hands at 8:50 if the length of the hour and minute hands are 4 cm and 6 cm, respectively? [T/I:4] * If you ONLY use the formula on Wikipedia, a mark of 0 will be given for question 7.

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MCR3U  UNIT  5  –  TRIG  FUNCTIONS               NAME:  ASSIGNMENT  #3                     DATE:  

 Knowledge/Understanding   Thinking/Inquiry   Communication   Application  

-­‐   /16   /5   /9    Note:    5  Communication  marks  will  be  given  overall  for  the  clarity  of  your  answers  including  conciseness,  organization,  proper  mathematical  form  and  notation.      

1. Solve  2tan22θ+ tan2θ−1=0 for  𝜃    to  the  nearest  tenth  of  a  degree  for  00 ≤θ≤900 .       [A:2]    

2. Solve  6sin2θ−5sinθ+1=0for  𝜃    to  the  nearest  degree  for  00 ≤θ≤3600 .           [A:3]    

3. Prove  the  identity   tanβsecβ−1+

tanβsecβ+1 =

2sinβcosβcos2β 1−cosβ( )

−4

2sinβcosβ .               [A:4]  

 4. Angle  𝜃  is  in  standard  position  on  a  coordinate  grid.    The  terminal  arm  of  𝜃  is  in  Quadrant  II  on  the  line  

with  equation  3y+2x =0 .    Determine  the  measure  of  𝜃.    Include  a  diagram  in  your  solution.                        [T/I:4]    

5. If  cscθ=− 898 ,  and  𝜃  is  an  angle  in  standard  position,  determine  all  possible  values  of  𝜃  for  

−5400 ≤θ≤2700                                            [T/I:4]    

6. Determine  the  number  of  triangles  that  could  be  drawn  for  ΔABC  if  ∠B=200 ,  c =5cm  and  b=2cm .    Find  the  measures  of  the  other  angles  and  the  other  side  of  each  possible  triangle.    Round  to  the  nearest  tenth,  if  necessary.                                          [T/I:4]  

 7. What  is  the  measure  of  the  smaller  angle  between  the  hour  hand  and  the  minute  hand  of  a  12-­‐hour  

clock  at  8:50?    What  is  the  distance  of  the  tips  of  the  hands  at  8:50  if  the  length  of  the  hour  and  minute  hands  are  4  cm  and  6  cm,  respectively?                                    [T/I:4]  

*  If  you  ONLY  use  the  formula  on  Wikipedia,  a  mark  of  0  will  be  given  for  question  7.