Solution

prove

Solution

Solution steps
Manipulating left side
Use the negative angle identity:
Rewrite using trig identities
Express with sin, cos
Use the basic trigonometric identity:
Simplify
Multiply fractions:
Multiply:
Use the basic trigonometric identity:
We showed that the two sides could take the same form

Popular Examples

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Frequently Asked Questions (FAQ)

  • Is sec(-x)sin(x)=tan(x) ?

    The answer to whether sec(-x)sin(x)=tan(x) is True