Trigonometry Pre Test

 

with solutions in green

 

You should attain a score of 7 or more to consider yourself proficient

 

 

 

  1. A right triangle has legs of 16 and 30 feet. How long is its hypotenuse?

a)�� 46 feet������ b)� 34 feet������ c)� �feet�������� d)17 feet

 

  1. One leg of a triangle is� 12 inches while the hypotenuse is 13 inches. How long is the other leg?

 

a)� 5 inches�������������� b)� 1 inch������������� c)� 25 inches���������� d)� 12 inches

 

  1. A right triangle is shown below.� What is� cos(A)?

a)� 21������� b)� 20�� c)� 21/29������ d)� 20/29

�

  1. A triangle has sides of lengths�� 6,8 and 9 units. Is it a right triangle?

 

a) yes����������� b)� no� (the 9 side should be 10)

 

  1. A right triangle is shown. What is the value of� A?

 

 

a)��� �30��������� b)� 20������������ c) 10����������������� d)�

 

 

  1. A right triangle is shown. What is the value of� A?

 

 

a)� 2�������������� b)� 3/2��������������� c)� 3����������� d)� 4�

 

7.� If� cos(α) = 2/3�� what is the value of� sin(α) ?

 

a)���� ��������b)� 1/3��������� c)� 5������� d)� 2/3�

 

 

8.� ��If� cos(α) = 2/3�� what is the value of� tan(α) ?

 

a)���� ��������b)� ��������c)� 5������� d)� 1/3�

 

  1. What is� 30 degrees converted to radians?

 

a)� 3 radians�������� b)� π radians������� c)� π/9 radians������� d) π/6 radians�������

 

 

  1. for x between� 0 and� 24 π radians , how many complete oscillations does the function� sin(x)� make?

 

a)� 1������� b)� 24������ c)� 12�� d) �2 π��� (1 oscillation� every 2π� units on the x axis )