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SonuNewbie

Asked: August 10, 2021In: NCERT Class 9th Maths

ABC is a triangle in which altitudes BE and CF to sides AC and AB are equal (see Fig. 7.32). Show that (i) ΔABE ΔACF (ii) AB = AC, i.e., ABC is an isosceles triangle.Q.4

Find the best solution of this important question of ncert class 9th of chapter triangles . Please help me to ...Read more

mehakNewbie

Asked: June 14, 2023In: CBSE

If one of the zeros of the quadratic polynomial f(x) = 4×2 – 8kx – 9 is negative of the other, then find the value of k.

find k if one of the zeroes is negative. and explain the importance of this question. Class 10th rd Sharma important question ...Read more

mehakNewbie

Asked: June 28, 2023In: CBSE

Solve the following quadratic equation by factorisation: 1. (x – 4)(x + 2) = 0

Explain, how did we split the number in the equation. How to factorise? Class 10th, Statistics, Rd sharma, Mathematics.

mehakNewbie

Asked: July 31, 2023In: CBSE

18. The diameters of the internal and external surfaces of a hollow spherical shell are 10cm and 6 cm, respectively. If it is melted and recast into a solid cylinder of the length of 8/3, find the diameter of the cylinder.

Explain the question using, formulas given in the chapter. Class 10th, Cbse, RD Sharma, Surface area and volumes.

deepaksoniGuru

Asked: March 10, 2021In: ICSE

A man invests rupees 8000 in a company paying 8 percent dividend, when a share of face value of rupees 100 is selling at rupees 60 premium. 1) What is his annual income? 2) What percent does he get on his money?

an important question from the book -ML aggarwal( avichal publication)class 10th , chapter3, shares and dividends …….. this question has three ...Read more

deepaksoniGuru

Asked: March 11, 2021In: ICSE

The upper part of a tree broken by wind falls to the ground without being detached. The top of the broken part touches the ground at an angle of 38° 30’ at a point 6 m from the foot of the tree. Calculate (i) the height at which the tree is broken. (ii) the original height of the tree correct to two decimal places.

sir this is the question from the book -ML aggarwal( avichal publication) class 10th , chapter20, heights and distances ……..Read more

deepaksoniGuru

Asked: March 15, 2021In: ICSE

(i) sin A/ (1 + cos A) = (1 – cos A)/ sin A (ii) (1 – tan2 A)/ (cot2 A – 1) = tan2 A (iii) sin A/ (1 + cos A) = cosec A – cot A

This is an important question taken from the Book ML Aggarwal, Avichal publication, class 10th and, chapter 18 We have to ...Read more

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Discy Latest Questions

ABC is a triangle in which altitudes BE and CF to sides AC and AB are equal (see Fig. 7.32). Show that (i) ΔABE ΔACF (ii) AB = AC, i.e., ABC is an isosceles triangle.Q.4

If one of the zeros of the quadratic polynomial f(x) = 4×2 – 8kx – 9 is negative of the other, then find the value of k.

Solve the following quadratic equation by factorisation: 1. (x – 4)(x + 2) = 0

18. The diameters of the internal and external surfaces of a hollow spherical shell are 10cm and 6 cm, respectively. If it is melted and recast into a solid cylinder of the length of 8/3, find the diameter of the cylinder.

A man invests rupees 8000 in a company paying 8 percent dividend, when a share of face value of rupees 100 is selling at rupees 60 premium. 1) What is his annual income? 2) What percent does he get on his money?

(i) sin A/ (1 + cos A) = (1 – cos A)/ sin A (ii) (1 – tan2 A)/ (cot2 A – 1) = tan2 A (iii) sin A/ (1 + cos A) = cosec A – cot A