Question

If sec x = -4 and pi/2 14 years ago

Answer 1

if sec = -4, then cos = -1/4

draw your reference triangle


use Pythagorean th. \[c ^{2}= a ^{2} = b ^{2}\]

plug in and solve
\[b=\sqrt{15}\]

fill in the remaining functions,
sin theta = root 15 / 4
tan theta = -root 15