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sint<√3/2 inequation

A inequation with variable

The solution

You have entered [src]
           ___
         \/ 3 
sin(t) < -----
           2  
$$\sin{\left(t \right)} < \frac{\sqrt{3}}{2}$$
sin(t) < sqrt(3)/2
Detail solution
Given the inequality:
$$\sin{\left(t \right)} < \frac{\sqrt{3}}{2}$$
To solve this inequality, we must first solve the corresponding equation:
$$\sin{\left(t \right)} = \frac{\sqrt{3}}{2}$$
Solve:
Given the equation
$$\sin{\left(t \right)} = \frac{\sqrt{3}}{2}$$
- this is the simplest trigonometric equation
This equation is transformed to
$$t = 2 \pi n + \operatorname{asin}{\left(\frac{\sqrt{3}}{2} \right)}$$
$$t = 2 \pi n - \operatorname{asin}{\left(\frac{\sqrt{3}}{2} \right)} + \pi$$
Or
$$t = 2 \pi n + \frac{\pi}{3}$$
$$t = 2 \pi n + \frac{2 \pi}{3}$$
, where n - is a integer
$$t_{1} = 2 \pi n + \frac{\pi}{3}$$
$$t_{2} = 2 \pi n + \frac{2 \pi}{3}$$
$$t_{1} = 2 \pi n + \frac{\pi}{3}$$
$$t_{2} = 2 \pi n + \frac{2 \pi}{3}$$
This roots
$$t_{1} = 2 \pi n + \frac{\pi}{3}$$
$$t_{2} = 2 \pi n + \frac{2 \pi}{3}$$
is the points with change the sign of the inequality expression.
First define with the sign to the leftmost point:
$$t_{0} < t_{1}$$
For example, let's take the point
$$t_{0} = t_{1} - \frac{1}{10}$$
=
$$\left(2 \pi n + \frac{\pi}{3}\right) + - \frac{1}{10}$$
=
$$2 \pi n - \frac{1}{10} + \frac{\pi}{3}$$
substitute to the expression
$$\sin{\left(t \right)} < \frac{\sqrt{3}}{2}$$
$$\sin{\left(2 \pi n - \frac{1}{10} + \frac{\pi}{3} \right)} < \frac{\sqrt{3}}{2}$$
                            ___
   /  1    pi         \   \/ 3 
sin|- -- + -- + 2*pi*n| < -----
   \  10   3          /     2  
                          

one of the solutions of our inequality is:
$$t < 2 \pi n + \frac{\pi}{3}$$
 _____           _____          
      \         /
-------ο-------ο-------
       t1      t2

Other solutions will get with the changeover to the next point
etc.
The answer:
$$t < 2 \pi n + \frac{\pi}{3}$$
$$t > 2 \pi n + \frac{2 \pi}{3}$$
Solving inequality on a graph
Rapid solution 2 [src]
    pi     2*pi       
[0, --) U (----, 2*pi]
    3       3         
$$t\ in\ \left[0, \frac{\pi}{3}\right) \cup \left(\frac{2 \pi}{3}, 2 \pi\right]$$
t in Union(Interval.Ropen(0, pi/3), Interval.Lopen(2*pi/3, 2*pi))
Rapid solution [src]
  /   /            pi\     /           2*pi    \\
Or|And|0 <= t, t < --|, And|t <= 2*pi, ---- < t||
  \   \            3 /     \            3      //
$$\left(0 \leq t \wedge t < \frac{\pi}{3}\right) \vee \left(t \leq 2 \pi \wedge \frac{2 \pi}{3} < t\right)$$
((0 <= t)∧(t < pi/3))∨((t <= 2*pi)∧(2*pi/3 < t))