Aries (astrology) Aries (astrology) Aries (♈) (meaning "ram") is the first astrological sign in the zodiac, spanning the first 30 degrees of celestial longitude (0°≤ <30°). Under the tropical zodiac, the Sun transits this sign from approximately March 20 to April 21 each year. This time duration is exactly the first month of Solar Hijri calendar (Hamal/Farvardin/Wray). The symbol of the ram is based on the Chrysomallus, the flying ram that provided the Golden Fleece. According to the tropical system of astrology, the Sun enters the sign of Aries when it reaches the March equinox, which time systems and the western calendar
Plus-minus sign be rewritten as ""x" ± ("y" − "z")" to avoid confusion, but cases such as the trigonometric identity are most neatly written using the "∓" sign. The trigonometric equation above thus represents the two equations: but "not" because the signs are exclusively alternating. Another example is which represents two equations. The plus-minus sign resembles the Chinese characters and , whereas the minus-plus sign resembles . Plus-minus sign The plus-minus sign (±) is a mathematical symbol with multiple meanings. The sign is normally pronounced "plus or minus" or "plus-minus". A version of the sign, including also the French word "ou" ("or")