Haileys work is correct so B should be the right answer
Step-by-step explanation:
sec x − cos x
Secant is the inverse of cosine:
(1 / cos x) − cos x
Find the common denominator:
(1 / cos x) − (cos² x / cos x)
Subtract:
(1 − cos² x) / cos x
Answer: Pt1= Only x=5
Pt2=Is not x=5 is an extraneous solution though I believe It is x=-2 is an extraneous solution
Step-by-step explanation: