Understanding how to convert between degrees and radians is one of the most crucial skills for anyone studying trigonometry, calculus, or advanced mathematics.
The reciprocal identities show us that ... sin² θ + cos² θ = 1 1 + tan² θ = sec² θ 1 + cot² θ = csc² θ The first identity is the foundation of trigonometry, representing the relationship between sine and cosine on the unit circle ... Strategy 1 ... Strategy 2 ... .