Trigonometric Functions and Properties

The video tutorial covers trigonometric functions, focusing on sine and cosine. It explains cofunction identities, such as cosine of 90 minus theta equals sine of theta, and their applications in solving problems. The tutorial also demonstrates how to calculate tangent and cotangent using these identities, emphasizing the importance of understanding complementary angles and their properties.

What is the sine of 60 degrees?

• 1/2

• 0

• √3/2

• 1

What is the cosine of 60 degrees?

• 1/2

• √3/2

• 0

• 1

Which trigonometric property relates sine and cosine of complementary angles?

• Secant of 90 minus theta equals cosecant of theta

• Cosine of 90 minus theta equals sine of theta

• Tangent of 90 minus theta equals cotangent of theta

• Sine of 90 minus theta equals cosine of theta

What is the cosine of 90 minus 60 degrees?

• Tangent of 30 degrees

• Cotangent of 30 degrees

• Sine of 30 degrees

• Cosine of 30 degrees

What is the sine of 90 minus 30 degrees?

• Tangent of 60 degrees

• Cosine of 60 degrees

• Cotangent of 60 degrees

• Sine of 60 degrees

What is the x-coordinate of the point on the unit circle for 60 degrees?

• 0

• 1

• √3/2

• 1/2

What is the relationship between the cosine of 60 degrees and the sine of 30 degrees?

• They are unrelated

• Sine is double the cosine

• Cosine is double the sine

• They are equal

What is the sine of 30 degrees?

• √3/2

• 1

• 1/2

• 0

What is the cosine of 30 degrees?

• 1

• √3/2

• 0

• 1/2

What is the tangent of 60 degrees?

• √3

• 1

• 1/√3

• 0