Sin Pi 4
Why is sin equal to pi / 4 1 / square root?
A pie / 4 angle (45 degree triangle) is 2 feet of the same length.
If we allow the legs of this triangle to be A and B and the hyenas C then we know that A = B
According to Pythagoras, (A 2) + (B 2) = (C 2)
Now it is important to note that you have set the size of this triangle (Husa) to 1. This is known because you are asking for (1) sin (pi / 4).
Since C represents Hyena and A = B, we can write the equation as:
2 (A 2) = 1 2
2 (A 2) = 1
(A 2) = 1/2
A = square (1/2)
A = 1 / (square (2))
For example, help
Sin (pi / 4) is equal to sin (45 degrees). The right triangle of 45 degrees with one hexaw will be 1 / square root 2. Since the pocket of an angle is equal to the length of the right side of the next right triangle through radius aura. Is formed on the circle of the unit (if the circle is centered on ori) then the parity will be accordingly.
Do you know the definition of triggers on the unit sphere points? If your circle is a circle with 1, then the whole circle is x 2 + y میں 2 = 1, then theta for each angle, x = cos (theta) and y = sin (theta). Theta is measured clockwise from the axis.
Pi / 4 means 45 degrees below the X axis. The points of this point are (1 / sqrt (2), 1 / sqrt (2)), ie according to the definition of sign and cosine, cos (pi / 4) = 1 / sqrt (2) and sin (pi / 4) = 1 / square root (2)
Unless you use a definition for a circle, you will need a different definition of what it means to have a negative angle with respect to a triangle.