Trig Ratio Basics

Front

What is the definition of the tangent ratio?

Back

Tags

CCSS.HSG.SRT.C.6

Front

What type of triangle is used for trigonometric ratios?

Back

Trigonometric ratios are used specifically with right triangles.

Tags

CCSS.HSG.SRT.C.6

Front

What is the formula for sine in a right triangle?

Back

Tags

CCSS.HSG.SRT.C.6

Front

What is the formula for cosine in a right triangle?

Back

Tags

CCSS.HSG.SRT.C.6

Front

What is the formula for tangent in a right triangle?

Back

Tags

CCSS.HSG.SRT.C.6

Front

What is the hypotenuse in a right triangle?

Back

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

Front

If sin(30°) = x/10, what is the value of x?

Back

x = 10 * sin(30°) = 10 * 0.5 = 5.

Tags

CCSS.HSG.SRT.C.8

Front

If cos(45°) = 14/x, what is the value of x?

Back

x = 14 / cos(45°) = 14 / (√2/2) = 14√2.

Tags

CCSS.HSG.SRT.C.8

Front

What is the relationship between sine and cosine for complementary angles?

Back

For complementary angles A and B, sin(A) = cos(B) and cos(A) = sin(B).

Tags

CCSS.HSG.SRT.C.7

Front

What is the Pythagorean theorem?

Back

Tags

CCSS.8.G.B.8