Question

help

Answer 1

@Angle

Answer 2

1 is a or c but i really think c

Answer 3

@Angle

Answer 4

we get

sin(pi/12) = opposite / hypotenuse = y / 1 = y

so y = sin(pi/12) = ?

Answer 5

pi/12 is 15 degrees so sin 15 is .258

Answer 6

good!

can you check which y value that matches with in your options?

Answer 7

c y would match cos

Answer 8

a. (-sqrt(6) - sqrt(2))/4 = -0.966
b. (-sqrt(6) + sqrt(2))/4 = -0.258
c. (sqrt(6) + sqrt(2))/4 = 0.966
d (sqrt(6) - sqrt(2))/4 = 0.258

Answer 9

d has sin for y value just calculated

Answer 10

yup

Answer 11

is it d because voca said i was wrong

Answer 12

yeah, it's D

Answer 13

at first i thought b but i knew by the direction of the unit circle just not how to solve it hey this isnt so bad can you help me some more

Answer 14

sure

Answer 15

3 is 0.5 so b or d

Answer 16

d?

Answer 17

D is correct for that one :D

Answer 18

what is the other two I am lost lol

Answer 19

let's look at the second one

Answer 20

so
cos(pi/2 - x) = cos(pi/2) * cos(x) + sin(pi/2) * sin(x)
= ?

Answer 21

is c the answer

Answer 22

oh lol I didn't realize that that was the format of the options x'D
so yeah

Answer 23

lol 5lol

Answer 24

use the idea that
cot = cos / sin

then use the
sin = stuff
cos = stuff
from the picture above

Answer 25

c?

Answer 26

@Vocaloid