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deepaksoniGuru

Asked: March 17, 2021In: ICSE

(i) If 3x + 5y/ 3x – 5y = 7/3, find x: y. (ii) If a: b = 3: 11, find (15a – 3b): (9a + 5b).

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A basic and basic important ques from chapter 7 of ML aggarwal, ratio and proportion We have given 3x + 5y/ ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If a, b, c, d are in continued proportion, prove that: (i) (a3+b3+c3) /(b3+c3+d3) =a/d (ii) (a2 – b2) (c2 – d2) = (b2 – c2)2 (iii) (a + d) (b + c) – (a + c) (b + d) = (b – c)2 (iv) a: d = triplicate ratio of (a – b): (b – c) (v) [ (a-b) /c+(a-c) /b]2 – [(d-b) /c +(d-c) /b)] 2 =(a-d) 2(1/c2-1/b2)

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This is an important ques from the Book ML Aggarwal class 10th,, chapter – 7, ratio and proportion. It is given ...Read more

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deepaksoniGuru

Asked: March 25, 2021In: ICSE

If O is the centre of the circle, find the value of x in each of the following figures (using the given information):

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This is an important and exam oriented question from Chapter name- circles Topic – Angle properties of circles Chapter number- ...Read more

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deepaksoniGuru

Asked: March 31, 2021In: ICSE

Ques 15 (b) In the figure (i) given below, AC is a diameter of the given circle and ∠BCD = 75°. Calculate the size of (i) ∠ABC (ii) ∠EAF.

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This is the basic and conceptual question from Chapter name- circles Topic – Angle properties of circles Chapter number- 15 In ...Read more

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deepaksoniGuru

Asked: April 15, 2021In: ICSE

Question 11. (a) In the figure (i) given below, the sides of the quadrilateral touch the circle. Prove that AB + CD = BC + DA. (b) In the figure (ii) given below, ABC is triangle with AB = 10cm, BC = 8cm and AC = 6cm (not drawn to scale). Three circles are drawn touching each other with vertices A, B and C as their centres. Find the radii of the three circles

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One of the most important and exam oriented question from Chapter name- circles Topic – Angle properties of circles Chapter ...Read more

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deepaksoniGuru

Asked: April 17, 2021In: ICSE

Question 36. In the adjoining figure ∆ABC is isosceles with AB = AC. Prove that the tangent at A to the circumcircle of ∆ABC is parallel to BC.

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This is circle based question from Chapter name- circles Topic – Angle properties of circles Chapter number- 15 In this ...Read more

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deepaksoniGuru

Asked: May 9, 2021In: CBSE

Problem 4: Write the sequence with nth term :(ii) an = 5 + 2n

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One of the most important and exam oriented question from Chapter name- Arithmetic Progression Class 10th Chapter number- 9 Exercise ...Read more

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(i) If 3x + 5y/ 3x – 5y = 7/3, find x: y. (ii) If a: b = 3: 11, find (15a – 3b): (9a + 5b).

If O is the centre of the circle, find the value of x in each of the following figures (using the given information):

Ques 15 (b) In the figure (i) given below, AC is a diameter of the given circle and ∠BCD = 75°. Calculate the size of (i) ∠ABC (ii) ∠EAF.

Question 36. In the adjoining figure ∆ABC is isosceles with AB = AC. Prove that the tangent at A to the circumcircle of ∆ABC is parallel to BC.

Problem 4: Write the sequence with nth term :(ii) an = 5 + 2n