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Trigonometry: Quiz 9
You may use a calculator for all of the questions in this quiz. Also, none of the diagrams are drawn to scale. 

1) What is the length of the side labelled x? Give your answer to one decimal place. 
2) What is the length of the side labelled y? Give your answer to one decimal place
3)
a) Write down the cosine formula.
b) Make cosA the subject of the formula. 

W​e have the triangle below. 
c) Find the size of angle p. Give your answer to one decimal place.
 
 
4) Find the size of angle x and y. Give your answer to one decimal place.
5) Find the size of angle p and q. Give your answer to one decimal place.
6) Find the length of m. Give your answer to one decimal place.  
7) Find the length of n. Give your answer to one decimal place.