# Trigonometry

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#1
In the interval 0°< x < 360°,find the values of x for sin x=-0.5243.give your answers to the nearest degree
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6 months ago
#2
Ok then, what do you do?

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6 months ago
#3
What does the sin graph look like? Can you draw it?
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#4
(Original post by CaptainDuckie)
Ok then, what do you do?

I typed in sin-1(-0,5243)to get 32
Then subtracted it from 360 to get 328 and i dont know how to find the last nu.ber
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6 months ago
#5
(Original post by Jermey)
I typed in sin-1(-0,5243)to get 32
Then subtracted it from 360 to get 328 and i dont know how to find the last nu.ber
Why subtracting by 360?
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6 months ago
#6
(Original post by Jermey)
I typed in sin-1(-0,5243)to get 32
I’ve just done the same and got -32 instead
(also note, it’s probably best to keep to as much accuracy as possible as the decimal place may affect which way to rounding goes at the end)
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6 months ago
#7
(Original post by CaptainDuckie)
Why subtracting by 360?
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#8
(Original post by CaptainDuckie)
What does the sin graph look like? Can you draw it?
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#9
(Original post by laurawatt)
I’ve just done the same and got -32 instead
(also note, it’s probably best to keep to as much accuracy as possible as the decimal place may affect which way to rounding goes at the end)
I got -32
0
6 months ago
#10
(Original post by Jermey)
Ok nice, so what now?
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#11
(Original post by CaptainDuckie)
Ok nice, so what now?
I need the last number
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6 months ago
#12
(Original post by Jermey)
I need the last number
What do you think you can do to get it

It’s not -32 as that’s not in the region of 0, 360
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#13
(Original post by CaptainDuckie)
What do you think you can do to get it

It’s not -32 as that’s not in the region of 0, 360
I don't know
0
6 months ago
#14
(Original post by Jermey)
I don't know
Here you go

1
6 months ago
#15
(Original post by CaptainDuckie)
What do you think you can do to get it

It’s not -32 as that’s not in the region of 0, 360
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6 months ago
#16
(Original post by Muttley79)

I’m just trying to help, don’t judge me.
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6 months ago
#17
(Original post by Jermey)
I don't know
Your answer 328 was nearly correct [you just rounded 32 too much]- please don't be put off.

Your graph is also correct so you are looking for an angle in the third quadrant - now - what might that be? I also agree that you need to keep at least 1 dp accuracy.
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#18
(Original post by Muttley79)
Your answer 328 was nearly correct [you just rounded 32 too much]- please don't be put off.

Your graph is also correct so you are looking for an angle in the third quadrant - now - what might that be? I also agree that you need to keep at least 1 dp accuracy.
I am confused
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6 months ago
#19
(Original post by CaptainDuckie)

I’m just trying to help, don’t judge me.
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#20
Could you pls use an example
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