Their names and abbreviations are sine sin cosine cos tangent tan cotangent cot secant sec and cosecant csc. Sin A frac 2tanfrac A 2 1tan2frac A 2 sinA 1tan2 2A. Costh Sinth X Cotth.
Sin-1 x sin-1 x.
Sin A 2 tan A 2 1 tan 2 A 2. Trigonometry Class 10 formulas are tabulated below. Cot 90o th Cos th. Cosec-1 x cosec-1 x.