Six Trigonometric Ratios

What type of triangle is the context of our study of trigonometry and Pythagorean Theorem?

• right triangle

• isosceles triangle

• scalene triangle

• acute triangle

Which trigonometric function does not use the hypotenuse in its ratio?

• sine

• cosine

• tangent

• secant

Find the ratio for cos A. Simplify the fraction.

• 36/27

• 3/5

• 36/45

• 4/5

What is the reciprocal of sine?

• cosine

• secant

• sin ^-1

• cosecant

Find sin A.

• 7/25

• 24/7

• 24/25

• 7/24

Find sin D.

• 12/13

• 5/13

• 13/5

• 13/12

Find tan B.

• 7/25

• 24/7

• 24/25

• 7/24

Which side is opposite to angle A?

• AC

• BC

• AB

Which side is opposite to angle D?

• DF

• ED

• EF

What is the ratio for cosine?

• opposite/hypotenuse

• adjacent/hypotenuse

• opposite/adjacent

• hypotenuse/adjacent