# Notes Trigonometry (Note-1) Pythogoras theorem : In a right- angled triangle, the square of hypotenuse is sum of the squares of the base and the perpendicular. Height and Distance Angles of Elevation  and Depression : Suppose we are viewing an object. The line of sight or the line of vision is a straight line from our eye to the object we are viewing. * if the Average Related to speed (Notes-2) Theorem (1) : If a person travels a distance of a speed of x km/hr and the same distance at a speed of y km/hr, then the average speed during the whole journey is given by Average (Notes) New An average, or more accurately an arithmetic mean, is the sum of n different data divided by n. For example, if a batsman scores 41, 51 and 43 runs in first, second and third match respectively, then Clock (Notes) New Some Important facts * Angle made by an hour hand of a clock in 1 hour is 30°. * Angle Made by min hand of a clock in 5 minutes = 30° Coding- Decoding (Notes New) In this type of questions, an expression is given in coded form. You have to answer the given question by decoding the code of the expression. Coding : Something written in special form in codes is called coding. Dice (Notes New) Cube : Closed figure which is composed of 6 square surface is called cube. Cuboid : Closed figure which is composed of 6 rectangular surface is called cuboid. Dice : When some numbers or points are printed Alphabet Test (Notes New) 1        2        3        4        5        6        7        8        9        10      11      12      13      A       B       C       D Logical Reasoning Statement & Courses of Action (Notes New) * To solve questions on ‘courses of action’ first of all decide whether it is a ‘problem solution’ or ‘fact-follow up action’ type * If it is ‘Problem solution’ then accept the suggested course of action, Mathematical Operations (Notes new) These questions are based on VBODMAS. V- Vinculum B- Brackets O- Of