Use the appropriate cofunction to find an equivalent expression for cos 54°
cot 24
sec 32
sin 36
csc 44
recall that cos x = sin (90-x)
90-x = 90-54 = 36
thus cos 54 = sin 36
hope this helps~ :)
To find an equivalent expression for cos 54° using the appropriate cofunction, we need to use the cofunction identity for the cosine function, which states:
cos θ = sin (90° - θ)
Since we want to find cos 54°, we can use this identity to rewrite it as sin (90° - 54°). Simplifying this expression gives us sin 36°.
Therefore, an equivalent expression for cos 54° using the appropriate cofunction is sin 36°.