The distance between any point (x0,y0) on the parabola and the focus (m,n) is the same as the distance between (x0,y0) and the directrix line ax+by+c. The distance between (x0,y0) and focus (a,b) is \sqrt((x-m)^2+(y-n)^2). The distance between (x0,y0) and ax+by+c is |ax0+by0+c|/\sqrt(m^2+n^2). Equalize these two expressions.
That would be tan
(1-cos)(1+cos)=1-cos² which equals to sin²
√sin²/cos²= sin/cos which equals to tan
Answer:

Step-by-step explanation:
1. You must clear the absolute value bars.
2. You have two cases: a positive case and a negative case.
3. First, you can solve the positive case as following:

4. Now, you must solve thie negative case as you can see below:

5. Therefore, the answer is:

Answer:
97
Step-by-step explanation:
81 + 93 + 76 + 78 + 97 = 425
425/5 = 85
Answer:
E.
Step-by-step explanation:
6^2=x^2+3^2
X^2=36-9
X=
