if sin(90 - x) = 0.5 what would cos x equal to:?

Question

1.0.5
2. -0.5
3.square root 3 over 2
4. -square root 3 over 2

Answer 1

sin(90-x) = cos x for all x

Therefore cos x = 0.5

Answer 2

Let' s expand sin(90-x)= sin 90 cos x - cos 90 sin x.
Since sin 90 = 1 and cos 90 = 0 (I assume
you are in degree mode.)
We get cos x. So cos x = 0.5.
You could also get this result by comparing
the 2 acute angles of a right triangle.

Answer 3

the sin of 30 equals .5 thus 90-x=30. So, x=60. Thus, the cos of 60 is .5

Answer 4

okay, so obviously you are in degree mode. so, remember that the value at which sin(x)= 1/2 is at 30 degrees. so, this is tellign you that sin(90-x)=sin(30)
so, x is 60.
therefore, if you take cos(x) when x=60,
then cos(60)=1/2

Answer 5

particular. This originates from the essential id sin^2(x)+cos^2(x)=a million observe that if we circulate cos^2(x) term on the different area, we get: => sin^2(x)+cos^2(x)=a million => sin^2(x)=a million-cos^2(x)

Answer 6

x would equal 89.5 if that's what you are asking.

I don't think that's even what you are asking though.

Answer 7

cos(x)=0.5