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deepaksoniGuru

Asked: March 16, 2021In: ICSE

(i) Root{(1+sinA)/(1-sinA)}= tanA+secA (ii) root{(1-cosA)/(1+cosA)}= cosecA-cotA

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This is an important question from the Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter- Trigonometric Identities Chapter number-18 We have ...Read more

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deepaksoniGuru

Asked: March 16, 2021In: ICSE

(i) Find three successive even natural numbers, the sum of whose squares is 308. (ii) Find three consecutive odd integers, the sum of whose squares is 83.

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This question has been taken from Book:- ML aggarwal, Avichal publication, class10th, quadratic equation in one variable, chapter 5, exercise ...Read more

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deepaksoniGuru

Asked: March 16, 2021In: ICSE

The hotel bill for a number of people for an overnight stay is Rs. 4800. If there were 4 more, the bill each person had to pay would have reduced by Rs. 200. Find the number of people staying overnight.

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This question has been taken from Book:- ML aggarwal, Avichal publication, class10th, quadratic equation in one variable, chapter 5, exercise ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If a, 12, 16 and b are in continued proportion find a and b.

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

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deepaksoniGuru

Asked: March 19, 2021In: ICSE

Given x=root(a2+b2) +root(a2−b2) /(root (a2+b2) −root(a2−b2) Use componendo and dividendo to prove that b²=2a²x/x²+1

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This is a basic question from ML aggarwal book of class 10th, chapter 7, ratio and proportion., ICSE board We have ...Read more

1

deepaksoniGuru

Asked: March 26, 2021In: ICSE

(b) In the figure (ii) given below, I is the incentre of ∆ABC. AI produced meets the circumcircle of ∆ABC at D. Given that ∠ABC = 55° and ∠ACB = 65°, calculate (i) ∠BCD (ii) ∠CBD (iii) ∠DCI (iv) ∠BIC.

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

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deepaksoniGuru

Asked: March 31, 2021In: ICSE

Question 12. In the given figure, O is the centre and AOE is the diameter of the semicircle ABCDE. If AB = BC and ∠AEC = 50°, find : (i) ∠CBE (ii) ∠CDE (iii) ∠AOB. Prove that OB is parallel to EC.

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

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(i) Root{(1+sinA)/(1-sinA)}= tanA+secA (ii) root{(1-cosA)/(1+cosA)}= cosecA-cotA

(i) Find three successive even natural numbers, the sum of whose squares is 308. (ii) Find three consecutive odd integers, the sum of whose squares is 83.

The hotel bill for a number of people for an overnight stay is Rs. 4800. If there were 4 more, the bill each person had to pay would have reduced by Rs. 200. Find the number of people staying overnight.

If a, 12, 16 and b are in continued proportion find a and b.

Given x=root(a2+b2) +root(a2−b2) /(root (a2+b2) −root(a2−b2) Use componendo and dividendo to prove that b²=2a²x/x²+1

(b) In the figure (ii) given below, I is the incentre of ∆ABC. AI produced meets the circumcircle of ∆ABC at D. Given that ∠ABC = 55° and ∠ACB = 65°, calculate (i) ∠BCD (ii) ∠CBD (iii) ∠DCI (iv) ∠BIC.

Question 12. In the given figure, O is the centre and AOE is the diameter of the semicircle ABCDE. If AB = BC and ∠AEC = 50°, find : (i) ∠CBE (ii) ∠CDE (iii) ∠AOB. Prove that OB is parallel to EC.