Question

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Answer 1

can you draw pi/4 angle

Answer 2

no

Answer 3

see pi (in radians) mean 180 degrees

Answer 4

right....

Answer 5

now can you draw it

Answer 6

in a unit circle draw pi/4

Answer 7

on ^^

Answer 8

right

Answer 9

now tell me what is a reference angle

Answer 10

A reference angle is the smallest angle that a given angle makes with the x-axis

Answer 11

All these angles have their reference angle as pi/4

Answer 12

find out which one is equivalent to the options you have

Answer 13

right

Answer 14

you didn't need any help....you did it on your own :)

Answer 15

try 15pi/4 and 19pi/4 as well and see what you get

Answer 16

the best way is to add and subtract pi/4 from all the number to see if you get integral value in pi terms (like pi, 2pi, 3pi and so on)

Answer 17

i told you the answers 15pi/4 and 19pi/4

Answer 18

other than what you already got

Answer 19

yeah

Answer 20

but the answers will not come straight in these either