Solution

Solution

Solution steps
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

3cos(x)+2sin^2(x)=0tan((3pi)/8)7sin(2X)=0sec(-pi/6)prove sin(x)(tan(x))=sec(x)-cos(x)prove

Frequently Asked Questions (FAQ)

  • What is the value of cos(270) ?

    The value of cos(270) is 0