# Trigonometric Equations - Identity Types

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Solve trig equations that require the use of an identity.

Trig. Equations : Identity Types : (Example 1)
In this series of tutorials you are shown several examples on how to solve trig. equations that require the use of an identity.
Example:
Solve 2sin2θ + 8cos22θ = 5 for 0° ≤ θ ≤ 360°
Trig. Equations : Identity Types : (Example 2)
In this series of tutorials you are shown several examples on how to solve trig. equations that require the use of an identity.
Example:
Solve 2sec2θ + tanθ = 3, for 0 ≤ θ ≤ 2π

Trig. Equations : Identity Types : (Example 3)
In this series of tutorials you are shown several examples on how to solve trig. equations that require the use of an identity.
Solve 2/tan2θ + 8 = 7 cosecθ for 0 ≤ θ ≤ π;

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