Trigonometry test
MAC 1147-TRIG TEST 3
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1. Simplify each expression
A. cscx.cosx B.
1
C. (1 cosx)(1+ cosx) D.
2. Solve the following equations in the interval of 0 < 2 A. cos2x cosx = 0 B. sin x = tan x C. sin 2x = sin x D. 4 cos2x 1 =0 3. Solve the right angle triangle ABC angle C=90, given b = 20 and angle A= 40 4. Round to one decimal place. Solve the triangle ABC given
A. angle A=100 a= 16 b= 10
B a=15 b=10 c= 8 [HINT: find angle a first]
5. Find the area of the triangle ABC given
A. a= 25 b= 15 c= 20
B. angle A= 100 c= 18 a= 30
C. angle A= 40 c= 30 b= 12
6. Graph the following ( -3 ,
4
)
7. Write in polar from 5 + 2i
8. Find the magnitude and the direction V= 4i + 8j
9. Find the resultant and the direction V= 90N at 40 W= 55N at 120
10. Find the magnitude and the direction of the vector P(3,-6) and Q(11,0)
11. Find the angle between the two vectors. V= 2i+6j W= -4i+10j
