Solution

Solution

+1
Decimal Notation
Solution steps
Use the following property:
Rewrite as
Apply the periodicity of :
Use the following trivial identity:
periodicity table with cycle:

Popular Examples

arctan((80}{\frac{30+20)/2})sin(arccos(4/5)+arccos(5/13))40sin(40)e^1sin(1)4+3cos(-pi/2)

Frequently Asked Questions (FAQ)

  • What is the value of cot(-390) ?

    The value of cot(-390) is -sqrt(3)