I don’t know what you need so I will give everything:
y intercept is -6
2(a^2-11a)-6
(2a+1)(x-6)
x=-0.5 and x=6
x intercepts= -0.5 and 6
Minimum= (11/6, -116/ 8)
1) An equation is where there can only be certain value or values in it. Identity, however, is where any value can be correct.
2) Don't know how.
3) Sine: + for first and second quadrants and vice versa.
Cosine: + for first and fourth quadrants and vice versa.
4) Don't know where.
5) Pretty sure no.
In each separate triangle is a right angle. So subtract 90 (right angle) and the given number from 180 (total degrees of a triangle) to find the missing angle.
For this problem recall the formula for polar to rectangular conversion is


and the polar coordinates are in the form
note: the dot is a substitute for the comma

so to find our coordinates we just need to plug our values of theta in


simplify and we get this as our final answer