document.write( "Question 1014836: Which of the following is a trigonometric identity?
\n" ); document.write( "a. cot θ + tan θ = 1
\n" ); document.write( "b. sec^2 θ + csc^2 θ = 1
\n" ); document.write( "c. tan^2 θ = sin^2 θ x sec^2 θ
\n" ); document.write( "d. cos^2 θ = sec^2 θ x tan^2 θ
\n" ); document.write( "Thanks \n" ); document.write( "

Algebra.Com's Answer #631134 by fractalier(6550) $\"\"$ $\"About$

You can put this solution on YOUR website!
Since sec^2 x = 1/cos^2 x, choice C is an identity. \n" ); document.write( "

\n" );