Question

Trig help

Answer 1

@Mertsj

Answer 2

For a I got period is pi/2 and amplitude is 2, is that right?

Answer 3

yes! correct

Answer 4

I need help with part b then.

Answer 5

what do you think the answer for either max or zeros are?

Answer 6

I have no idea :P

Answer 7

hehe :P.
well its a function of theta and it's equal to y. the function takes the values from y = -2 and y = +2 [which is the amplitude of this sinusoidal function]

Answer 8

so the maximum value it can have is y = 2 and the minimum value is y = -2. and since it's a sinusoidal function, it repeats itself periodically. (every pi/2 radians as you stated in part a)

Answer 9

can you tell from the graph for which values of theta the function takes y = -2 y = 0 or y = 2?

Answer 10

ummm I'm not really sure how to answer that question? I see it on the graph but how do I name the spots?

Answer 11

Do I name places on the x-axis or something?

Answer 12

yes you do

Answer 13

So maximum values= 0, pi/2, pi, 3pi/2, 2pi?

Answer 14

@Euler271

Answer 15

yes :). notice that value. or any other value on that function repeats every (pi/2) the period]

this can simplify and help to double-check the other two

Answer 16

Wait, what is the standard form for answering this question? Would I put like x=0, pi/2,pi, 3pi/2, 2pi or what?

Answer 17

yes

Answer 18

lol ok thanks

Answer 19

Wait, how do I find the zeros? It's a little hard to tell from looking at the graph what the values are?

Answer 20

@Euler271