Solution

prove

Solution

Solution steps
Manipulating left side
Rewrite using trig identities
Use the Pythagorean identity:
Simplify
Expand
Apply the distributive law:
Apply minus-plus rules
Multiply the numbers:
Simplify
Group like terms
Add similar elements:
We showed that the two sides could take the same form

Popular Examples

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Frequently Asked Questions (FAQ)

  • Is 7cos^2(B)-7sin^2(B)=14cos^2(B)-7 ?

    The answer to whether 7cos^2(B)-7sin^2(B)=14cos^2(B)-7 is True