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:
$2.08
Step-by-step explanation:
2 7/8= 23/8 divided 1.38
<span>3x − 2y = 6 (1)
6x − 4y = 12 (2)
divide equation (2) by 2
3x - 2y = 6
equation (2) is same as equation 1
so answer is </span>infinitely many solutions