Solution

Solution

+1
Decimal Notation
Solution steps
Use the following property:
Rewrite as
Apply the periodicity of :
Rewrite using trig identities:
Write as
Use the Angle Sum identity:
Use the following trivial identity:
periodicity table with cycle:
Use the following trivial identity:
periodicity table with cycle:
Use the following trivial identity:
periodicity table with cycle:
Use the following trivial identity:
periodicity table with cycle:
Simplify

Popular Examples

cos((3pi)/4)-i*sin((3pi)/4)arcsin(6/4)sin^2(100)60*cos(20)tan(arccos(0.95))

Frequently Asked Questions (FAQ)

  • What is the value of cos(-960) ?

    The value of cos(-960) is -1/2