Find a Missing Angle Using Trig 24-25

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

What is the purpose of setting a calculator to degree mode when solving for angles?

Back

Setting the calculator to degree mode ensures that angle measurements are calculated in degrees, which is necessary for solving problems involving triangles.

Front

If one angle in a triangle is 90 degrees, what type of triangle is it?

Back

It is a right triangle.

Front

What is the sine function in relation to a right triangle?

Back

The sine function is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the cosine function in relation to a right triangle?

Back

The cosine function is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the tangent function in relation to a right triangle?

Back

The tangent function is the ratio of the length of the opposite side to the length of the adjacent side.

Front

How do you find a missing angle using the sine function?

Back

To find a missing angle using the sine function, use the inverse sine function (sin⁻¹) on the ratio of the opposite side to the hypotenuse.

Front

How do you find a missing angle using the cosine function?

Back

To find a missing angle using the cosine function, use the inverse cosine function (cos⁻¹) on the ratio of the adjacent side to the hypotenuse.

Front

How do you find a missing angle using the tangent function?

Back

To find a missing angle using the tangent function, use the inverse tangent function (tan⁻¹) on the ratio of the opposite side to the adjacent side.

Front

What is the relationship between the angles in a right triangle?

Back

In a right triangle, the two non-right angles are complementary, meaning they add up to 90 degrees.