**SAT 2 Math II Discussion Thread Oct 2015**

@Amacord According to the curves in the CB Mathematics book, you would get about a 750 or so.

rip i just want higher than my sat math

skipped 4 missed probably 2, do i still have a chance at an 800?

did you guys 1.284 for the cos^2(pi/a) + cos^2(pi/b)… question? I think it was #48.

@therealdeal123 yep I used that cos^2x = 1 + cos2x identity

@potterismylife Lol, 1-sin^2x makes it infinitely easier.

@Newdle lmao I realized that after I finished going through the whole process )):

Do you guys think the curve for today will be favorable for us, or harsh? I think the curve is correlated with the difficulty of the test, right? And so if today’s test is hard (do you think it was), the curve will be nicer?

lol thats what i used

did you guys get around 381 ft for the distance between the municipal building and the taller building?

sounds right to me

Do you remember if 1.284 was option C or D?

@therealdeal23 i don’t think it was that much? it was tall building - height of the municipal building then i used the law of sines to solve it.

What was the answer that was like which has 3 distinct roots? (X^2+4) (X-2) ?

For the question about what Is a function for all of x did you put both 2 and 3 As a function?

@asiankid88 it was the (x^2 + 4x -4)(x-2), you get it by plotting it on calculator and (x^2+4) gives imaginary zeros
@luckykansasmath it was 2 and 3 since they had one y value for every x value

I think it was only the 2nd function. The last function was a constant function. I don’t know if they technically count f(X) = 1/2 + 0x as a function, though… I’d be wrong if they did.

Yaaaaaaaaas thank u

@asiankid88 using the discriminant, b2-4ac > 0 for two roots. in first equation b=0, so the discriminant would be negative meaning there was imaginary roots. I believe the answer was E, which said something like (x^2-4x-4)(x-2).

What about the probability? Did you get 99.321% or something like that about teal arems