MATH 4 - Final Exam Review #9

Front

What is the secant function (sec x)?

Back

The secant function is the reciprocal of the cosine function, defined as sec x = 1/cos x.

Front

When do you use the Law of Cosines?

Back

The Law of Cosines is used to find an unknown side or angle in a triangle when you know two sides and the included angle or all three sides.

Front

State the Law of Cosines formula.

Back

The Law of Cosines states that c² = a² + b² - 2ab cos(C), where c is the side opposite angle C.

Front

What is the cosecant function (csc x)?

Back

The cosecant function is the reciprocal of the sine function, defined as csc x = 1/sin x.

Front

How do you find the length of a side in a triangle using the Law of Cosines?

Back

To find the length of a side, rearrange the Law of Cosines formula to solve for the unknown side.

Front

What is the tangent function (tan x)?

Back

The tangent function is defined as tan x = sin x / cos x.

Front

What is the cosine function (cos x)?

Back

The cosine function is a trigonometric function that represents the adjacent side over the hypotenuse in a right triangle.

Front

What is the sine function (sin x)?

Back

The sine function is a trigonometric function that represents the opposite side over the hypotenuse in a right triangle.

Front

What is the relationship between the sides and angles in a triangle?

Back

In any triangle, the larger the angle, the longer the opposite side; conversely, the smaller the angle, the shorter the opposite side.

Front

How do you apply the Law of Sines?

Back

The Law of Sines states that the ratio of a side length to the sine of its opposite angle is constant for all three sides and angles in a triangle.