Home > Calculus calculators > Simplifying trigonometric equations, proving identities calculator

Method and examples
Trigonometry
Method  

1. Simplifying trigonometric equations, proving identities
Expression
 
 
  1. `sin^2(30)*cos^2(60)`
  2. `sin(30)*cos(60)+sin(30)*cos(60)`
  3. `sin(30)*csc(30)-sin(60)*csc(60)`
  4. `2sin^2(30)*3cos^2(60)`
  5. `(2tan(60))/(1+tan^2(60))`
  6. `(3sec(60)+2tan(45)+csc(30))/(sin^2(60)+cot^2(45))`
  7. `(3sec(60)+2tan(45)+csc(30))(sin^2(60)+cot^2(45))`
  8. `sin(30)*cos(45)*tan(60)=sin(45)*cos(60)*cot(30)`
  9. `tan(45)*sec(72)*sin(58)=cos(32)*csc(18)`
  10. `sin^2(34)-cot^2(46)-cos^2(56)+tan^2(44)=sec^2(62)-csc^2(28)`
  11. `sin^2(50)+sin^2(40)=1`
  12. `sin(35)*sec(55)-cos(55)*csc(35)=tan(25)-cot(65)`
  13. `2sin(30)+2tan(45)-3cos(60)-2cos^2(30)=0`
  14. `2sec^2(x)-2`
  15. `sin(x)sec(x)`
  16. `sin(x)cot(x)`
  17. `cot(x)sin(x)`
  18. `tan(x)+cot(x)`
  19. `cos(x)+cot(x)`
  20. `tan(x)sin(x)+cos(x)`
  21. `cot^4(x)+cot^2(x)`
  22. `cos^2(x)csc^2(x)-cos^2(x)`
  23. `tan^2(x)-sin^2(x)`
  24. `(csc(x)-sin(x))(sec(x)-cos(x))`
  25. `(tan(x)+cot(x))(sec(x)-cos(x))(csc(x)-sin(x))`
  26. `1+1/tan^2(x)`
  27. `csc(x)/cos(x)-cos(x)/sin(x)`
  28. `sec(x)/(2(tan(x)+cot(x)))`
  29. `(tan^2(x)-cot^2(x))/(sin^2(x)-cos^2(x))`
  30. `(tan^2(x)+cot^2(x))/(tan^2(x)-cot^2(x))`
  31. `(tan^2(x)-cot^2(x))/(tan^2(x)+cot^2(x))`
  32. `(3sin(x)+5cos(x))^2+(3cos(x)-5sin(x))^2`
  33. `(1+cos(x))/sin(x)+sin(x)/(1+cos(x))`
  34. `sin^2(x)cos(x)+sin^3(x)+cos^2(x)sin(x)+cos^3(x)`
  35. `(sin^4(x)-cos^4(x))/(sin^2(x)-cos^2(x))`
  36. `5cos^2(x)+2sin^2(x)`
  37. `2cos^2(x)+sin^2(x)`
  38. `(sin^4(x)+cos^4(x))`

2. Find the value of other five trigonometric functions or solve expression
If = in then
 
1. Find the value of other five trigonometric functions
 
2. Solve expression
  1. If `sin(x)=5/13` then find other trigonometry
  2. If `cos(x)=12/13` then find other trigonometry
  3. If `tan(x)=5/12` then find other trigonometry
  4. If `csc(x)=13/5` then find other trigonometry
  5. If `sec(x)=13/12` then find other trigonometry
  6. If `cot(x)=12/5` then find other trigonometry
  1. If `sin(x)=3/5` then solve `cos(x)csc(x)+tan(x)sec(x)`
  2. If `tan(x)=1/2` then solve `(1-tan^2(x))/(1+tan^2(x))+(2tan(x))/(1+tan^2(x))`
  3. If `sin(x)=4/5` then solve `(1-sin(x))/cos(x)+cos(x)/(1-sin(x))`
  4. If `cos(x)=3/5` then solve `(1-sin(x))/cos(x)+cos(x)/(1-sin(x))`

3. For P(3,4), find the value of all six trigonometric functions
P ( , )
 
  1. `(3,4)`
  2. `(15,8)`
  3. `(-8,6)`
  4. `(7,-24)`

4. The Equation for the terminal Side `theta` is `2x+y=0, x>=0`. Find the value of all six trigonometric functions.
Equation = and
 
  1. `2x+y=0` and `x>=0`
  2. `3x+5y=0` and `x>=0`
  3. `y=1/2x` and `x<0`
  4. `sqrt(3)x+y=0` and `x<=0`
  5. `y=2x` and `sec(theta)>0`
  6. `y=1/6x` in Quadrant-3

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