As you can see that the tricks and tips mentioned above are highly sufficient, and many users have found them to be pretty effective in solving trigonometric solutions quickly and correctly.
If you have a trick which is not mentioned here, do tell us about it.
In this Chapter, we will generalist the concept of trigonometric ratios to trigonometric function and study their properties.
Angle is a measure of rotation of a given ray about its initial point. one complete revolution from the position of the initial side as indicated in This is often convenient for large angles.
In the We know that the circumference of a circle of radius 1 unit is 2π.
Thus, one complete revolution of the initial side subtends an angle of 2π radian.
Trigonometry’ is derived from the Greek words ‘trigon’ and ‘metron’ and it means ‘measuring the sides of a triangle’.
The subject was originally developed to solve geometric problems involving triangles.
You don’t have to start on one side of the equation and plow your way forward, you can work both ends then meet someplace in the middle. Like difference of squares, sometimes things cancel out.
Turn tan and sec and cot and csc all into sin and cos. We’re so used to seeing (sinx)^2 (cosx)^2 then substituting a 1, we forget that the equals sign goes both ways.