Question 1: sin(x)cos(x)(1 + tan²(x)) =

sin(x)

sec(x)

tan(x)

cos(x)



Question 2: (1 - sin²x)/cos(x) + (1 - cos²x)/sin(x)

sin(x)+cos(x)

sin(x)

cos(x)

tan(x)


Question 3:

If α and β are the angles of the right triangle shown in the figure above, then cos²α + cos²β is equal to:

0

1

0.5

-0.5




Question 4: Select the relationship between the angles a and b of the right triangle ABC, in the figure below.



sin(a) = cos(a)

cos(a + b) = 1

sin(a + b) = 0

sin(a) = cos(b)




Question 5:


















Question 6: Solve the following trigonometric equation:

, 0 ≤ x < 2π

and

and

and

and and



Question 7: The lengths of the sides AB and BC of the triangle below are AB = 4 and BC = 6. What is the area A of triangle ABC?


A = 4

A = 5

A = 6

A = 8





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