When saying sin A = 0.5 (1/2) you're saying, that on a circle graph, the y value is 0.5 (1/2). With this information, you can tell that angle A is either 60O or 120O (pi/3 or 2pi/3). Saying that the angle is pi/2 is just a guess.
if A is pi/2. then that means its at 90 degrees and the points for this are (0,1) if you're finding the sin for this then sin is the same as y. meaning that sin would be 1, not 0.5
When saying Sin A=0.5 it is not the same as pi/2. Because pi/2 is actually Sin A=1. If Sin A is 0.5 then it must be half of pi/2 which is not represented on the unit circle.
I think that pi/4 should be the answer to SinA = 0.5 cause is going half way around the first quadrant but when you look at the Sin for pi/4 is the square root of 2/2 and so the correct answer would be pi/3 because the sin for that is 1/2
Its wrong because SinA=0.5 is not the same as pi/2 pi/2 is 90 degrees which means that sin is equal to 1. If sinA is equal to 0.5 then it has to be half of pi/2 which could be the sin of 45 degrees.
If sin A was .5 then its considered 1/2 and Sin is for the Y value so 1/2 for the Y means the X has to be 3pi/2 which would mean that the angle is 30 degrees because 30 degrees has the following coordinates: (3pi/2,1/2) therefore it CANNOT be pi/2 because that has the coordinates: (0,1)
Okay so pi/2=90 so therefore, A = pi/2 is wrong because pi/2 has the coordinates of(0,1) and so since sin A=0.5 basically its half of pie so that means that A would be pi/4 because that is half of 90 degrees so A=pi/2 is wrong.
Its wrong because SinA =.50 is not the same as pi/2.in the unit circle Pi/2 is equal to 90 degrees its coordinates are (0,1).Meaning Sin would be equal to 1 because that is the y value. I don't even know where you got .5 from.
Its wrong because pi/2 is 90 degrees and the coordinates are (0,1) Cosine is the X value and Sine is the Y value so sin = 1 for pi/2. Sin = .5 would be pi/3 60 degrees because the y value is 1/2
What is wrong with your argument is that angle A could not be pi/2 because that would mean that Angle A= 90 degrees, but the sin of 90 is not .5, it is 1
Actually, to find the real measurement of angle A, just do the reverse sin function of your graphing calculator, which looks like a sin to the power of negative one. Do reverse sin of .5 and you get 30. That means that the real measurement of angle A is 30 degrees, or pi/6
The argument for the value of A is wrong because the Sin of pi/2 would be 1, not o.5
ReplyDeleteIf Sin A = 0.5 then A = pi/6
When saying sin A = 0.5 (1/2) you're saying, that on a circle graph, the y value is 0.5 (1/2). With this information, you can tell that angle A is either 60O or 120O (pi/3 or 2pi/3). Saying that the angle is pi/2 is just a guess.
ReplyDeleteif A is pi/2. then that means its at 90 degrees and the points for this are (0,1) if you're finding the sin for this then sin is the same as y. meaning that sin would be 1, not 0.5
ReplyDeleteJust because SinA= 0.5 doesnt mean its half of pi. it means the y-value is positive 1/2. Thus A= pi/3
ReplyDeleteif sinA=1/2 it would have to be pi/6. at 30 degrees sin=1/2 or 0.5.
ReplyDeleteWhen saying Sin A=0.5 it is not the same as pi/2. Because pi/2 is actually Sin A=1. If Sin A is 0.5 then it must be half of pi/2 which is not represented on the unit circle.
ReplyDeleteI think that pi/4 should be the answer to SinA = 0.5 cause is going half way around the first quadrant but when you look at the Sin for pi/4 is the square root of 2/2 and so the correct answer would be pi/3 because the sin for that is 1/2
ReplyDeleteIts wrong because SinA=0.5 is not the same as pi/2 pi/2 is 90 degrees which means that sin is equal to 1. If sinA is equal to 0.5 then it has to be half of pi/2 which could be the sin of 45 degrees.
ReplyDelete"A" can't be pi/2 because pi/2 is 90 degrees and the sin of pi/2 is 1.
ReplyDeletei mean, "A" could be close to 0.5 but its not accurate.
If sin A was .5 then its considered 1/2 and Sin is for the Y value so 1/2 for the Y means the X has to be 3pi/2 which would mean that the angle is 30 degrees because 30 degrees has the following coordinates: (3pi/2,1/2) therefore it CANNOT be pi/2 because that has the coordinates: (0,1)
ReplyDeleteThis is wrong because "A" is 1 and not pi/2. In the unit circle Pi/2 is 90 degrees and its coordinates is(0,1).
ReplyDeleteThis is incorrect b/c 0.5 does not equal pi/2. pi/2 is at 90 degrees. So Sin A would be 1 since its the Y value.
ReplyDeletegiovanni g. it is wrong because the sin of pi/3 is is 1/2 and the sin of pi/2 is 0,1
ReplyDeleteOkay so pi/2=90 so therefore, A = pi/2 is wrong because pi/2 has the coordinates of(0,1) and so since sin A=0.5 basically its half of pie so that means that A would be pi/4 because that is half of 90 degrees so A=pi/2 is wrong.
ReplyDeleteDoesn't sin of pi= 1? so that would mean that the argument was wrong in the sense that pi/2 doesn't equal to 0.5? that's what i think about it???
ReplyDeleteIts wrong because SinA =.50 is not the same as pi/2.in the unit circle Pi/2 is equal to 90 degrees its coordinates are (0,1).Meaning Sin would be equal to 1 because that is the y value. I don't even know where you got .5 from.
ReplyDeleteIts wrong because pi/2 is 90 degrees and the coordinates are (0,1) Cosine is the X value and Sine is the Y value so sin = 1 for pi/2.
ReplyDeleteSin = .5 would be pi/3 60 degrees because the y value is 1/2
What is wrong with your argument is that angle A could not be pi/2 because that would mean that Angle A= 90 degrees, but the sin of 90 is not .5, it is 1
ReplyDeleteActually, to find the real measurement of angle A, just do the reverse sin function of your graphing calculator, which looks like a sin to the power of negative one. Do reverse sin of .5 and you get 30. That means that the real measurement of angle A is 30 degrees, or pi/6