Solution

Solution

Solution steps
Use the following property:
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

arcsin(sin(pi/3))sin((11pi)/3)sin(arccos((sqrt(3))/2)+arctan(5/4))sec^2((3pi)/4)cos((11pi)/3)

Frequently Asked Questions (FAQ)

  • What is the value of cos(-270) ?

    The value of cos(-270) is 0