Use cofunction identity to solve trigonometric equation

The video tutorial reviews identities, focusing on cofunction identities and their transformations. It explains how to solve trigonometric equations using the unit circle and reference angles, and how to find solutions in all quadrants. The tutorial also covers the tangent graph, emphasizing its periodicity and how solutions repeat every π.

Which of the following pairs are considered cofunctions in trigonometry?

• Sine and Cosine

• Secant and Tangent

• Cosecant and Cotangent

• Sine and Tangent

What is the reference angle for the tangent of an angle that results in sqrt(3)/3?

• π/4

• π/6

• π/3

• π/2

In which quadrants should the angle be located for the tangent to be negative?

• 1st and 3rd

• 1st and 2nd

• 3rd and 4th

• 2nd and 4th

What is the period of the tangent function?

• 2π

• π

• π/2

• 3π

How can all solutions for a tangent equation be expressed?

• Smallest positive angle plus π/2N

• Smallest positive angle plus 2πN

• Smallest positive angle plus 3πN

• Smallest positive angle plus πN