Trigonometric Ratios

Front

What is tan(A)?

Back

tan(A) = a/b, where 'a' is the length of the opposite side and 'b' is the length of the adjacent side.

Front

What is cos(A)?

Back

cos(A) = b/c, where 'b' is the length of the adjacent side and 'c' is the length of the hypotenuse.

Front

What is sin(A)?

Back

sin(A) = a/c, where 'a' is the length of the opposite side and 'c' is the length of the hypotenuse.

Front

What is the mnemonic to remember trigonometric ratios?

Back

Soh Cah Toa, which stands for: Sin = Opposite/Hypotenuse, Cos = Adjacent/Hypotenuse, Tan = Opposite/Adjacent.

Front

Which trig function is used when given two sides that are not the hypotenuse?

Back

Tangent (tan) is used when you have the lengths of the opposite and adjacent sides.

Front

What does Soh Cah Toa stand for?

Back

Soh: Sin = Opposite/Hypotenuse, Cah: Cos = Adjacent/Hypotenuse, Toa: Tan = Opposite/Adjacent.

Front

In a right triangle, what is the hypotenuse?

Back

The hypotenuse is the longest side of a right triangle, opposite the right angle.

Front

If the opposite side is 3 and the adjacent side is 4, what is tan(A)?

Back

tan(A) = 3/4.

Front

If the adjacent side is 5 and the hypotenuse is 13, what is cos(A)?

Back

cos(A) = 5/13.

Front

If the opposite side is 12 and the hypotenuse is 13, what is sin(A)?

Back

sin(A) = 12/13.