SOLUTION: Which of the following is a trigonometric identity? a. cot θ + tan θ = 1 b. sec^2 θ + csc^2 θ = 1 c. tan^2 θ = sin^2 θ x sec^2 θ d. cos^2

Algebra.Com
Question 1014809: Which of the following is a trigonometric identity?
a. cot θ + tan θ = 1
b. sec^2 θ + csc^2 θ = 1
c. tan^2 θ = sin^2 θ x sec^2 θ
d. cos^2 θ = sec^2 θ x tan^2 θ
Thanks

Found 2 solutions by ikleyn, fractalier:
Answer by ikleyn(52787)   (Show Source): You can put this solution on YOUR website!
.
c.) is an identity.

Others are not.


Answer by fractalier(6550)   (Show Source): You can put this solution on YOUR website!
Just answered this one. Choice C.
RELATED QUESTIONS

Which of the following is a trigonometric identity? a. cot θ + tan θ = 1 b.... (answered by fractalier,ikleyn)
Establish the Identity: (secθ-tanθ)^2+1 /... (answered by lwsshak3)
The expression sin θ (cot θ - csc θ) is equivalent to? A) 2 Cos θ (answered by stanbon,lynnlo)
prove (1 / tan^2θ ) + (1 / 1+ cot^2θ) = 1 and (sinθ +... (answered by chibisan)
Marty is proving that the following trigonometric identity is true:... (answered by Alan3354,ikleyn)
1). Find the length of an arc that subtends a central angle of 150 ° in a circle of... (answered by stanbon)
Instructions: Transform the left side of the equation into the right side using... (answered by stanbon)
Please help me solve this question: Prove the following identities a. sin {θ}... (answered by tommyt3rd)
verify an identity: 1) tan(t)+ 2 cos(t)csc(t)=sec(t)+csc(t)+cot(t)... (answered by solver91311)