9.09+9.10

Question 1

If you are finding a side length use:

Answer 1

Sine, Cosine, Tangent

Question 2

If you are finding an angle measure use:

Answer 2

sine^-1, cosine^-1, tangent^-1

Question 3

Angle of elevation

Answer 3

The angle formed by the horizontal and the observer’s line of sight upwards

Question 4

Angle of depression

Answer 4

The angle formed by the horizontal (drawn from observer) and the observer’s downward line of sight

Question 5

Formulas for sine cosine and tangent

Answer 5

sin=opposite/horizontal
cos=adjacent/horizontal
tan=opposite/adjacent