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deepaksoniGuru

Asked: March 15, 2021In: ICSE

(i) (sec A – 1)/(sec A + 1) = (1 – cos A)/(1 + cos A) (ii) tan2 θ/ (sec θ – 1)2 = (1 + cos θ)/ (1 – cos θ) (iii) (1 + tan A)2 + (1 – tan A)2 = 2 sec2 A (iv) sec2 A + cosec2 A = sec2 A. cosec2 A

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This question has been taken from the Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter- Trigonometric Identities Chapter number-18 We ...Read more

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deepaksoniGuru

Asked: March 16, 2021In: ICSE

Five times a certain whole number is equal to three less than twice the square of the number. Find the number.

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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

A trader buys x articles for a total cost of Rs. 600. (i) Write down the cost of one article in terms of x. If the cost per article were Rs. 5 more, the number of articles that can be bought for Rs. 600 would be four less. (ii) Write down the equation in x for the above situation and solve it to find x.

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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

Find the mean proportion of: (i) 5 and 80 (ii) 1/12 and 1/75 (iii) 8.1 and 2.5 (iv) (a – b) and (a3 – a2b), a ˃ b

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It is a question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication In this question we have ...Read more

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deepaksoniGuru

Asked: March 19, 2021In: ICSE

Given that a³+3ab²/(b³+3a²b) =63/62. Using componendo and dividendo find a: b.

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exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication This question has been ...Read more

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deepaksoniGuru

Asked: April 1, 2021In: ICSE

Question 4. Two concentric circles are of the radii 13 cm and 5 cm. Find the length of the chord of the outer circle which touches the inner circle.

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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 32. In the adjoining figure, CBA is a secant and CD is tangent to the circle. If AB = 7 cm and BC = 9 cm, then (i) Prove that ∆ACD ~ ∆DCB. (ii) Find the length of CD.

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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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(i) (sec A – 1)/(sec A + 1) = (1 – cos A)/(1 + cos A) (ii) tan2 θ/ (sec θ – 1)2 = (1 + cos θ)/ (1 – cos θ) (iii) (1 + tan A)2 + (1 – tan A)2 = 2 sec2 A (iv) sec2 A + cosec2 A = sec2 A. cosec2 A

Five times a certain whole number is equal to three less than twice the square of the number. Find the number.

Find the mean proportion of: (i) 5 and 80 (ii) 1/12 and 1/75 (iii) 8.1 and 2.5 (iv) (a – b) and (a3 – a2b), a ˃ b

Given that a³+3ab²/(b³+3a²b) =63/62. Using componendo and dividendo find a: b.

Question 4. Two concentric circles are of the radii 13 cm and 5 cm. Find the length of the chord of the outer circle which touches the inner circle.

Question 32. In the adjoining figure, CBA is a secant and CD is tangent to the circle. If AB = 7 cm and BC = 9 cm, then (i) Prove that ∆ACD ~ ∆DCB. (ii) Find the length of CD.