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molecule where the ratio of atoms is 1 : 3. So the bond angle is 1200, for example BF3
an equation containing trigonometric ratios of angles.
functions of an angle that relate the size of the angle to the length of the sides of a triangle...
a statement that is true for all values of a variable.
forms between two atoms if the two atoms share six electrons.
animals with three cellular body wall layers: the ectoderm, mesoderm and endoderm.
a rhythmic foot consisting of a stressed syllable followed by an unstressed syllable, e.g. There...