How to use trig identities to divide two trig functions

The video tutorial explains the concept of dividing by fractions using reciprocals, highlighting that dividing a number by itself results in one. It introduces the cofunction identity involving tangent and cotangent, and discusses the property of cotangent with negative angles. The tutorial concludes with a brief mention of corrections to earlier mistakes.

What is the result when you divide a fraction by itself?

• Undefined

• The fraction itself

• Zero

• One

When dividing by a fraction, what operation can you perform instead?

• Add the reciprocal

• Divide by the reciprocal

• Subtract the reciprocal

• Multiply by the reciprocal

What is the cofunction of tangent of π/2 minus theta?

• Secant of theta

• Cosine of theta

• Sine of theta

• Cotangent of theta

How does the cotangent of a negative angle compare to the cotangent of the positive angle?

• They are unrelated

• They are opposites

• One is the reciprocal of the other

• They are equal

What is the result when dividing a function by itself if one is positive and the other is negative?

• Positive

• Negative

• Zero

• Undefined