Understanding Trigonometric Functions

Jimmy Chang introduces key trigonometry terms, focusing on sine, cosine, and tangent, along with their reciprocal functions: cotangent, secant, and cosecant. He explains these terms in the context of circles and right triangles, providing foundational knowledge for a trigonometry course.

What is the primary focus of the trigonometry vocabulary discussed in the video?

• To learn about calculus terms

• To understand algebraic expressions

• To grasp six key trigonometry terms

• To explore geometry concepts

How is the sine function abbreviated?

• cos

• cot

• sin

• tan

In a right triangle, how is the sine of an angle defined?

• Adjacent over hypotenuse

• Hypotenuse over opposite

• Opposite over hypotenuse

• Adjacent over opposite

What is the cosine of an angle in a circle?

• X-coordinate over radius

• Y-coordinate over radius

• Radius over X-coordinate

• Y-coordinate over X-coordinate

In a right triangle, how is the cosine of an angle defined?

• Opposite over adjacent

• Adjacent over hypotenuse

• Opposite over hypotenuse

• Hypotenuse over adjacent

How can tangent be expressed in terms of sine and cosine?

• Cosine times sine

• Sine times cosine

• Sine over cosine

• Cosine over sine

In a right triangle, how is the tangent of an angle defined?

• Hypotenuse over opposite

• Hypotenuse over adjacent

• Adjacent over opposite

• Opposite over adjacent

What is the cotangent function in terms of tangent?

• 1 over sine

• 1 over cosine

• 1 over secant

• 1 over tangent

How is the cotangent function defined in a circle?

• Y over X

• Y over radius

• X over Y

• Radius over Y

What is the secant function in terms of cosine?

• 1 over cotangent

• 1 over cosine

• 1 over tangent

• 1 over sine