Solution

prove

Solution

Solution steps
Show that the two sides are not equal
For plug in
Refine to a decimal form
Rewrite as
Apply the periodicity of :
Use the following trivial identity:
periodicity table with cycle:
The two sides are not equal

Popular Examples

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Frequently Asked Questions (FAQ)

  • Is csc^2(θ)(1-cos^2(θ))=tan(420) ?

    The answer to whether csc^2(θ)(1-cos^2(θ))=tan(420) is False