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я Pi (3.1416) I Sigma (sign of summation) (I) Omega (angles measured in radians) a Acceleration due to gravity (32.16 ft. per A sec. per sec.) »' (or J) Imaginary quantity (,/П) sin Sine cos Cosine tan Tangent cot Cotangent see Secant CSC Cosccant vers Versed sine covcrs Covcrscd sine sin-1a Arc the sine of which is a arcsin a (sin a)-' Reciprocal of sin a (I sin a) sin'jr flth power of sin x sinh.* Hyperbolic sine of x cosh x Hyperbolic cosine of x Д Delta (increment of) 5 Delta (variation of) d Differential (in calculus) д Partial differentiation (in calculus) \ Integral (in calculus) j; Integral between the limits a and b ■ 51 = 1x2x3x4x5 (Factorial) z Angle L Right angle 1 Perpendicular to Д Triangle О Circle CD Parallelogram © Degree (circular arc or temperature) • Minutes or feet - Seconds or inches J a prime (Г a double prime a\ a sub one a2 a sub two a* a sub n О Parentheses [) Brackets {} Braces
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