Sin 120 Degrees
Where do you get the sin at 120 degrees (with the calculator)? 3
I got a CLEP cake and I know the answer, but I didn't use what I found. Thank you very much!
See sin 120 degrees = sin 90 + 30 degrees.
= Without 30 degrees = 3 times below the root 2.
Sin 120 degrees
Is a standard triangle with sides 1, 3 and 2.
2 is hyena.
And angles of 30 °, 60 ° and 90
š3 is opposite to the angle of 60.
Note that sin 120 ° = sin 60
Sin 120 ° = Sin 60 ° = 3/2
It is easy.
After sin 90, back, this is it
Sin 0 Sin 30 Sin 60 Sin 90 Sin 120 Sin 150 Sin 180
0 1/2 š3 / 2 1 š3 / 2 1/2 0
sin 120 has the basic angle of sin 60.
(Sin 120 = Sin 60)
Sin 60 = Root 3/2
Answer = root 3/2, note: no root (3/2)
Sin 120 Degrees
Sin 120 Degrees
Use sinx = sin (180x)
Sin (60) = Sin (18060)
Sin (60) = Sin (120)
And we know that sin60 = 3/2 square
Then sin60 = sin120
sin120 = sqrt3 / 2.
Sin (120) = Sin (18060) = Sin (60) = Square root (3) / 2
120 in the second quadrant, where the sign is positive.
Use only sin (60 + 60)
So progress
You will get 2sin60cos60.
What is this (2 * (root3) * 1) / 4
= Root 3/2
You need Triangle 60 30 and Triangle 45 45.
Do you know about sin 30 = 0.5?
120 is in the second quadrant which is equal to 30 with the same mark because the sign in the second quadrant is positive, so the answer is 0.5
