Advanced Trigonometry Calculator

Compute sin, cos, tan, cot, sec, csc and inverse trig with degree/radian toggle. Includes quick conversions, precision control, and calculation history.

30°

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Trigonometry Values

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Trigonometric Identities:

sin²θ + cos²θ = 1
1 + tan²θ = sec²θ
1 + cot²θ = csc²θ
sin(2θ) = 2sinθcosθ
cos(2θ) = cos²θ - sin²θ

Domains: asin/acos require x ∈ [-1,1]. tan, sec, cot, csc may be undefined at some angles (e.g., tan 90°).

Formulas: sec(θ)=1/cos(θ), csc(θ)=1/sin(θ), cot(θ)=1/tan(θ). Degree→radian: θ_rad=θ_deg·π/180.