Solution

Solution

Solution steps
Rewrite using trig identities:
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
Simplify
Remove parentheses:
Multiply fractions:
Multiply the numbers:
Divide the numbers:

Popular Examples

sin(45)-sin(-45)arccos((-18)/(sqrt(26)\sqrt{14)})50sin(50)tan^2(55)(cos(270))^{sin(90)}

Frequently Asked Questions (FAQ)

  • What is the value of 4cos(240) ?

    The value of 4cos(240) is -2