95%+ Marks: How to Finish Maths Section A in 15 Min 🎯

Welcome to Prashant maths classes!
here we provide quick revision important questions and easy tricks for CBSE class 10th maths.
master concepts from NCERT and other side books with simple explanation.
our goal is to help every class 10 student score well in mathematics by simplifying tough chapters.
This video provides a quick revision and important questions with easy tricks for CBSE Class 10th Maths, focusing on Section A (0:00-0:12) to help students manage their time effectively during exams.

The video covers various math problems and their solutions, including:
Finding the value of 'x' in LCM problems: The instructor explains how to use the maximum power rule for LCM to solve for 'x' given prime factors and the LCM (0:30-1:47).
Calculating the shortest distance from the y-axis: This section demonstrates that the shortest distance from the y-axis is the absolute value of the x-coordinate (1:47-2:00).
Determining 'k' for non-parallel linear equations: The video explains how to find the value of 'k' when two linear equations are not parallel, using the condition a1/a2 ≠ b1/b2 (2:00-2:56).
Solving problems related to quadrilaterals circumscribing a circle: The video illustrates how to find the length of a side of a quadrilateral using the theorem that tangents from the same external point to a circle are equal (2:57-4:55).
Simplifying trigonometric expressions: The instructor shows how to find the value of secθ - tanθ when secθ + tanθ is given, by using the identity sec²θ - tan²θ = 1 (4:55-5:39).
Identifying non-quadratic equations: The video provides a quick tip on recognizing equations that are not quadratic by checking if the x² term cancels out upon simplification (5:39-5:58).
Understanding minor segments in intersecting circles: This part visually explains that when two circles intersect, they form two minor segments, and then quickly counts the number of segments in a given figure (6:01-7:23).
Calculating the area of a circle inscribed in a square: The video demonstrates how to find the radius of an inscribed circle when the side of the square is known and then calculates its area (7:26-8:15).
Probability of not getting a specific sum with a pair of dice: The instructor calculates the probability of not getting a sum of 8 when tossing a pair of dice (8:15-9:22).
Solving trigonometric equations for 'x': This segment shows how to find the value of 'x' in a trigonometric equation involving sinθ (9:22-9:54).
Finding possible pairs of numbers given their sum and HCF: The video explains how to determine the possible pairs of numbers when their sum and Highest Common Factor (HCF) are given, emphasizing the condition for co-prime factors to maintain the given HCF (9:56-13:40).
Calculating the height of a cone given its base area and volume: The video demonstrates how to find the height of a right circular cone using the formulas for the area of its base and its volume (13:45-14:37).
Identifying the correct option for equal zeros of a quadratic polynomial: This section discusses the condition (d=0 or b²=4ac) for a quadratic polynomial to have equal zeros (14:37-15:43).
Calculating the area of a sector given the arc length and radius: The video shows a method to find the area of a sector by relating the formulas for arc length and sector area (15:47-17:33).
Finding the perimeter of a similar triangle: The instructor explains how to find the missing side lengths of a triangle using the ratios of corresponding sides of similar triangles, and then calculates its perimeter (17:37-19:24).
Probability of choosing a vowel from a word: The video demonstrates how to calculate the probability of picking a vowel from the word "MATHEMATICS" and then solves for 'x' based on a given probability expression (19:27-20:38).
Identifying the type of quadrilateral from coordinates: The video shows how to plot given coordinates to visually determine if the quadrilateral is a square, rectangle, parallelogram, or trapezium, without using distance formula (20:39-22:34).
Impact of increasing observations on the median: The instructor explains that if each observation in a set is increased by a certain value, the median also increases by that same value (22:37-23:33).
Calculating the length of a tangent to a circle: This segment uses the Pythagorean theorem to find the length of a tangent drawn from an external point to a circle, given the radius and the distance from the center (23:35-24:28).
Assertion and Reason questions: The video concludes with two assertion and reason questions, explaining the logic behind prime factors for ending digits and trigonometric identities (24:30-26:16).
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