## Triangle is a very popular shape used in interior designing

Case study from CBSE sample paper 2024 – 2025 Case study 2:- Triangle is a very popular shape used in interior designing. The picture given above shows a cabinet designed by a famous interior designer. Here the largest triangle is represented by ΔABC and smallest one with shelf is represented by ΔDEF. PQ is parallel … Read more

## Trigonometry formula list

Explore essential trigonometry formulas, including sine, cosine, and tangent identities, along with angle sum and difference formulas. These key equations are crucial for solving trigonometric problems in mathematics, helping students and professionals simplify complex calculations and understand relationships between angles and sides in triangles. Trigonometry formula list You see these formulae in the given link … Read more

## Find the eqaaution of the line which intersect the lines

Question 1:-  Find the eqaaution of the line which intersect the lines and passes through the point (1, 1, 1) Solution:- Let dr’s of the line (a, b, c) and Equation of line passes through the point P(1, 1, 1) .  .  . (i) Let line .  .  .(ii) and lline .  .  .(iii) Let … Read more

## Jaspal Singh repays his total loan Rs 1,18,000 by paying

Question 12:- Jaspal Singh repays his total loan Rs 1,18,000 by paying every month starting with the Ist instalment of Rs 1000, If he increases the instalment by Rs 100 every month, what amount will be paid by him in the 30th instalment ? What amount of loan will he still have to pay after … Read more

## The nth derivative of tan inverse (1+x)/(1-x)

Learn how to find The nth derivative of tan inverse (1+x)/(1-x) using partial fractions and differentiation techniques. Follow our detailed step-by-step solution to master this calculus problem Q 3:- Find the nth derivative of Solution:- Let Let ⇒ ⇒ ⇒ ⇒ Now, differentiate with respect to x ⇒ ⇒ ⇒ Using partial fraction .  .  . … Read more

## evaluate int 0 pi 2 frac xsin x cos x sin4x cos4x

evaluate int 0 pi 2 frac xsin x cos x sin4x cos4x Question 1: Evaluate: Solution: Let I = .   .   . (i) Using property I = ⇒  I = ⇒ I = ⇒  Dividing by in numerator and denominator ⇒ ……..(ii) Let The limits are, when

## Show that the sum of all terms of an A.P. whose first term is a

Question 7: Show that the sum of all terms of an A.P. whose first term is a, the second term is b and the last term is c is equal to .                                                … Read more