7/9
0.75
you have to do the arcsin which is sin-1 on your calculator. i have not met anyone in my life who can do sin or arcsin in their head. not even my college teachers. your theta is equal to 20degrees
2 sin(x) + 1 = 0 2 sin(x) = -1 sin(x) = -1/2 x = 210° and 330°
22
because sin(2x) = 2sin(x)cos(x)
You can use the Pythagorean identity to solve this:(sin theta) squared + (cos theta) squared = 1.
2 sin^2 theta = 1/4 sin^2 theta = 1/8 sin theta = sqrt(1/8) theta = arcsin(sqrt(1/8))
Until an "equals" sign shows up somewhere in the expression, there's nothing to prove.
If sin (theta) is 3/5, then sin2 (theta) is (3/5)2, or 9/25.
If sin2(theta) = 0, then theta is N pi, N being any integer
Your question is insufficiently precise, but I'll try to answer anyway. "Sine squared theta" usually means "the value of the sine of theta, quantity squared". "Sine theta squared" usually means "the value of the sine of the quantity theta*theta". The two are not at all the same.
It is 2*sin(theta)*sin(theta) because that is how multiplication is defined!
1
Well, darling, if we square the first equation and the second equation, add them together, and do some algebraic magic, we can indeed show that a squared plus b squared equals 89. It's like a little math puzzle, but trust me, the answer is as sassy as I am.
theta = arcsin(0.0138) is the principal value.
COS squared Theta + SIN squared Theta = 1; where Theta is the angles measurement in degrees.
Theta equals 0 or pi.