Use the image below to answer the following question. Find the value of sin x° and cos y°. What relationship do the ratios of sin x° and cos y° share?
okay sin=opposite/hypotenuse and cos=adjacent/hypotenuse
since we don't have the hypotenuse.we need to use pythagorean theorem
you know how to use Pythagorean theorem? a^2+b^2=c^2
Yes I do sorry I was talking to my mom
it's okay.This lag is killing me!.
Lol so what do I do
239^2 right
my bad it is 8^2+15^2=c^2 I put 15^5 and it was not like that. 8*8+15*15=c^2
289
correct :).But remember 289^2.So with that square you're gonna find the square root of 289
17
right. so you got all the sides. |dw:1403893620061:dw|
now lets go find sinx first
remember the formula I gave you before for sin?
So is It 8/17
right :).so sinx=8/17 so now solve it. 8/17=?
.47
right always in thing cases always try to use 4 numbers after the decimal point. so like this 0.4705
Ok so whats next
so now on your calculator make sure it's on grad.press a buttom that says 2nd and then sin and plug in that number
I mean not on grad.I mean degree
Wait what put what In
your calculator have to be in degree.and in there there's a buttom that says 2nd.After pressing 2nd press sin.And then will appear something like parenthesis and then plug in your answer that is 0.4705
I got 0.4533 is that right
noo.well I can't explain you how to use the calculator I'm not a good teach I barely know how to explain lol but. the answer is 28.06
CAn you just tell me what I need to type so I can be done with this test
in the calculator press a buttom that says 2nd.After pressing 2nd press sin and then in the calculator it will appear somethin that looks like this sin-1( and then plug in the number 0.4705
and thats your answer for x
it has to give you 28.06
is that one of your answer choices?
now for lets go for cos y.You remember the formula? I know you can do it by yourself
and as you will see that thing that they share is that they have same answer.Or equal angles.
it will give you the same answer if you go for cos y. :).It was nice to talk to you sir.Soldier I'm out! ughh :D
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