Which pythagorean identity is correct? a. sin^2(theta)+1=cos^2(theta) b. tan^2(theta)+1=sec^2(theta) c. 1-cot^2(theta)=csc^2(theta) d. 1-cos^2(theta)=tan^2(theta)

The pythagorean identity that is correct is option B:

B. tan^2(theta)+1=sec^2(theta)

Step-by-step explanation:

The pythagorean identities are:

1.) sin^2(theta) + cos^2(theta) = 1

2.) tan^2(theta) + 1 = sec^2(theta)

3.) 1 + cot^2(theta) = csc^2(theta)

Then the pythagorean identity that is correct is option B:

B. tan^2(theta)+1=sec^2(theta)

B

Step-by-step explanation: Just did it!

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!