Trigonometry Review Flashcards

Flashcards for reviewing trigonometry concepts and problems.

sin (π/2)

1

cos (π)

-1

Quadrant III Angle

An angle formed with the initial side on the positive x-axis where both sine and cosine are negative.

tan (π/2)

Undefined

sin θ for Point A (-12, 9)

9/15

cos θ for Point A (-12, 9)

-12/15

tan θ for Point A (-12, 9)

-9/12

Angles for sin θ < 0 and cos θ < 0

Quadrant III

sin θ in Quadrant 4 where tan θ is negative

-√((hypotenuse)^2 - 1)/hypotenuse

sin (π/2)

1

cos (π)

-1

Quadrant III Angle

An angle formed with the initial side on the positive x-axis where both sine and cosine are negative.

tan (π/2)

Undefined

sin θ for Point A (-12, 9)

3/5

cos θ for Point A (-12, 9)

-4/5

tan θ for Point A (-12, 9)

-3/4

Angles for sin θ < 0 and cos θ < 0

Quadrant III

sin θ in Quadrant 4 where tan θ is negative

-√((hypotenuse)^2 - 1)/hypotenuse