Sample paper class 10 Term 2 CBSE
Sample paper class 10 Term 2 CBSE
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Chapter 13 Surface Area and Volumes Notes Class 10
Chapter 13 Surface Area and Volumes Notes Download
Chapter 9 Some Applications of Trigonometry Notes Class 10
Chapter 9 Some Applications of Trigonometry Notes Dowload Class 10 Chapter 9 Some Application of Trigonometry Notes Height and Distance : One of the main application of trigonometry is to find the distance between two or more than two places or to find the height of the object or the angle subtended by any object at a given point without actually measuring the distance or heights or angles. Trigonometry is useful to astronomers, navigators, architects and surveyors etc. in solving problems related to heights and distances. The directions of the objects can be described by measuring: • Angle of elevation • Angle of depression Angles of elevation or angles of depression of the objects are measured by an instrument called Theodolite. Theodolite is based on the principles of trigonometry, which is used for measuring angles with a rotating telescope. In 1856, Sir George Everest first used the giant theodolite, ...
Chapter 11 Constructions Notes Class 10
Chapter 11 Constructions Notes Download Class 10 Chapter 11 Constructions Notes Determining a Point Dividing a given Line Segment, Internally in the given Ratio M : N Let AB be the given line segment of length x cm. We are required to determine a point P dividing it internally in the ratio m : n. Steps of Construction: • Draw a line segment AB = x cm. • Make an acute ∠ BAX at the end A of AB. • Use a compass of any radius and mark off arcs. Take (m + n) points A 1 , A 2 , … A m , A m+1 , …, A m+n along AX such that AA 1 = A 1 A 2 = … = A m+n 1 , A m+n • Join...