Law of cosines or Cos law The law of cosines or Cos law is one of the trigonometric laws which is useful for solving the angles or sides of a triangle. For example, if all three sides of a triangle (SSS) are given, the cosine rule allows one to easily find any of the […]
Read More →Law of sines or Sine law The law of sines or Sine law is one of the trigonometric laws which is useful for solving the angles or sides of a triangle. In trigonometry, the law of Sines says that in any given triangle, the ratio of any side length to the sine of its opposite […]
Read More →Divisibility Rules For 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 and 14 Divisibility Rules – Number Divisible by 1 When we divide number 1, to another number, then we get result is a Whole number. In other words we can say that any number divided by 1 we get […]
Read More →Divisibility Rules For 1 When we divide one number 1, to another then we get result is a Whole number. In other words we can say that any number divided by 1 we get the number itself. Example: 12 is divisible by 1, the result is 12. 304 […]
Read More →AAS Congruence Rule Angle-Angle-Side Two triangles are congruent, if two pairs of corresponding angles and one pair of opposite sides are equal in both triangles. In above figure there are two triangles, △CAB and △PQR △CAB and △PQR has two pairs of corresponding angles ∠A = ∠R, ∠C = ∠P and one pair of opposite sides side CB = side PQ. […]
Read More →If the diagonals of a Quadrilateral, bisect each other then that Quadrilateral is a Parallelogram Given: ABCD is a quadrilateral with AC and BD are diagonals and diagonals intersect each other at O. i.e. OA = OC and OB = OD To Prove: ABCD is a parallelogram. Proof: In △AOD and △COB […]
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