Question

http://prntscr.com/127a32
I got B wrong

Answer 1

Cos 270 =0
and Sec 270=1/0
Answer will be Undefined

Answer 2

Yup its undefined,
\[\sec(-270) \\ \\ =\frac{1}{\cos(-270)} = undefined\]

Answer 3

http://prntscr.com/127a92
http://prntscr.com/127aaj
i marked D and got it wrong

Answer 4

@.Sam.

Answer 5

So B

Answer 6

Yeah

Answer 7

http://prntscr.com/127ax4

Answer 8

i marked D because we can see that oscillations are not periodic

Answer 9

@.Sam.

Answer 10

There is a period if you look closely

Answer 11

It's A, about 6 for period

Answer 12

http://prntscr.com/127bg5

Answer 13

I marked C got it wrong

Answer 14

@.Sam.

Answer 15

Amplitude is 6

Answer 16

amplitude can't be negative. Amplitude is the distance from the median to the maximum or minimum.

Answer 17

Others are correct, so its B

Answer 18

http://prntscr.com/127f30

Answer 19

http://prntscr.com/127f4b

Answer 20

I select ed A

Answer 21

@.Sam.

Answer 22

But i think it C

Answer 23

@.Sam.

Answer 24

Can you see the transformation?

Answer 25

The negative flips the graph

Answer 26

So B

Answer 27

Yes

Answer 28

http://prntscr.com/127f9r

Answer 29

I selected C but its wrong

Answer 30

@.Sam.

Answer 31

The middle point of that graph should be 25, so the equation should add 25, something like
y=sin(x)+25
And there is amplitude of 20, count the peak = 45 and middle = 25, so 45-25=20

Answer 32

so B

Answer 33

So its something like
y=20sin(x)+25

Answer 34

yes

Answer 35

thanks a lot

Answer 36

Welcome :)