Trig Identities Pop Quiz

Please select the correct solution

• csc² x
• cot² x
• sin² x
• sec² x

Please select the correct solution 
cos ² x + sin ² x=  

• 1
• csc ² x + sec ² x
• sin ² x
• 1 - sin ² x

Is this a pythagorean identity?
tan²x + 1 = secx

• Yes
• No

Solve the following for tan²θ:
1 + tan²θ = sec²θ 

• tan²θ = sec²θ + 1
• tan²θ = sec²θ - 1
• tanθ = secθ - 1
• tan²θ = opp/adj

The Pythagorean Theorem ONLY works on which triangle? 

• obtuse
• scalene
• isosceles
• right

Is this a pythagorean identity?
tan²x + 1 = secx

• Yes
• No

Which of the following is an incorrect identity?

• sin²x + cos²x = 1

• tan(x) = sin(x)/cos(x)

• cot(x) = cos(x)/sin(x)

• 1 + cot²x = sec²x

Select all that are Pythagorean Identities.

• sin²(u) + cos²(u) = 1

• sin²(u) - cos²(u) = 1

• tan²(u) + 1 = sec²(u)

• cot²(u) + csc²(u) = 1

• cot²(u) + 1 = csc²(u)