Question

Anyone get this?





pic:

Answer 1

the 65-70
just if u could explain one that'd be helpful enough

Answer 2

Just use your calculator and do \[65) \Theta = \sin^{-1}[-0.5640]\]

note that for \[\sec(\Theta) = \frac{1}{\cos(\Theta)} = -1.116 \]

So what you do is flip the terms. \[\cos(\Theta) = \frac{ 1 }{ -1.116 } = \Theta = \cos^{-1}[-0.8960]\]

Answer 3

@Math2400 Are we allowed to use calculator?

Answer 4

For the other ones similar to that you do the same thing .\[70) \csc(\Theta) = \frac{1}{\sin(\Theta)} = 1.485\]

Answer 5

yes i think so @ash2326. it's a friends and im half asleep and really dont feel like workin it out haha. Thanks guys!!

Answer 6

u guys dont need to do any others i got now

Answer 7

Don't do your friends homework =P do mine plox.

Answer 8

Just a min, if you use calculator you'll get only one solution. But each of these question wil have more than one solution

Answer 9

haha @mebs she just doesnt get it thought i'd help her. and really? so do u have to do it by hand then @ash2326

Answer 10

We have to use calculator and hand both
I'll show
\[\sin x=-0.564\]
Firstly use calculator to find
\[x=\sin^{-1} (-0.564)\]
This value will be in the range of [-90, 0]
Now we have to give the answer in the range of (0, 360)
DO you get this part?

Answer 11

ok i follow i believe

Answer 12

Now tell me in which quadrants sin is negative?

Answer 13

III and IV

Answer 14

Suppose using calculator we get -A
so sin (-A)=-0.564
so
sin A=0.564
Get this part?

Answer 15

ok yea u're just usin the -A as the number i got u now

Answer 16

now the answers would be
180+A
as
sin(180+A)=-sin A
and 360-A
sin (360)=-sin A
since sine is negative in these quadrats

Answer 17

This is a bit tough part, Are you following?

Answer 18

yes im with u. u're doin great at explaining

Answer 19

Thanks, so we're done
the answers are 180+A and 360-A
Now for the other questions, you have to keep in mind the quadrants in which they are positive or negative. It'd be better if you review inverse functions,

Answer 20

yea i got it. Thank u for explaining. Now let's see if i can explain it as well as u did to my friend haha.

Answer 21

Cool :D