According to the Pythagorean identity, what expression is equivalent to 1 + tan²(θ)?
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sec²(θ)
This identity is derived by dividing the primary Pythagorean identity (sin²θ + cos²θ = 1) by cos²θ. It is a staple in simplifying trigonometric expressions and performing substitutions in calculus.
Also asked as:
- What is the result of the trigonometric identity 1 + tan²(θ)?