I think that this an example of a paired t test. Since each student (subject) is given 2 treatments of the same material.
The positions of the sun, earth and shooting star form a right angled triangle, where distance between earth and sun is 'y', and the angle 'x°' is given
Now, in a right angled triangle using trigonometry, we can determine a side of the triangle is one of the sides and one of the angles is known
Here, if we use cos x =
we can determine the distance between the shooting star and the sun. This can be done because we know that the base is 'y', the angle is x° and the hypotenuse represents the distance between the sun and the shooting star
Note: cos values for each x are definite.
The standard for is 2000+ 1200
1. 4n + 28
2. 30-10x
3. 3m+3n
4. 8+2j