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deepaksoniGuru

Asked: March 11, 2021In: ICSE

An observer 1.5 m tall is 20.5 metres away from a tower 22 metres high. Determine the angle of elevation of the top of the tower from the eye of the observer.

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

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deepaksoniGuru

Asked: March 15, 2021In: ICSE

Without using trigonometric tables, evaluate the following (i) (sin 65o/ cos 25o) + (cos 32o/sin 58o) – sin 28o sec 62o + cosec2 30o (ii) (sin 29o/ cosec 61o) + 2 cot 8° cot 17° cot 45° cot 73° cot 82° – 3(sin² 38° + sin² 52°).

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This ques has been asked in 2015 so it is very important question This question is from the Book- ML AggarwalRead more

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deepaksoniGuru

Asked: March 16, 2021In: ICSE

Mrs. Goswami deposits Rs. 1000 every month in a recurring deposit account for 3 years at 8% interest per annum. Find the matured value.

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This is an important question from the Book- ML Aggarwal Board- ICSE Publication- Avichal Chapter- Bankin8 Chapter number-2 This question ...Read more

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deepaksoniGuru

Asked: March 16, 2021In: ICSE

At an annual function of a school, each student gives the gift to every other student. If the number of gifts is 1980, find the number of students.

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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 17, 2021In: ICSE

(i) If A: B = 1/4: 1/5 and B: C = 1/7: 1/6, find A: B: C. (ii) If 3A = 4B = 6C, find A: B: C

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

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If a, b, c are in continued proportion, prove that: (a+b)/(b+c) =a2(b-c) /b2(a-b) (ii) 1/a3+1/b3+1/c3=a/b2c2+ b/c2a2+c/a2b2 (iii) a: c = (a2 + b2): (b2 + c2) (iv) a2b2c2 (a-4 + b-4 + c-4) = b-2 (a4 + b4 + c4) (v) abc (a + b + c)3 = (ab + bc + ca)3 (vi) (a + b + c) (a – b + c) = a2 + b2 + c2

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

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An observer 1.5 m tall is 20.5 metres away from a tower 22 metres high. Determine the angle of elevation of the top of the tower from the eye of the observer.

Without using trigonometric tables, evaluate the following (i) (sin 65o/ cos 25o) + (cos 32o/sin 58o) – sin 28o sec 62o + cosec2 30o (ii) (sin 29o/ cosec 61o) + 2 cot 8° cot 17° cot 45° cot 73° cot 82° – 3(sin² 38° + sin² 52°).

Mrs. Goswami deposits Rs. 1000 every month in a recurring deposit account for 3 years at 8% interest per annum. Find the matured value.

At an annual function of a school, each student gives the gift to every other student. If the number of gifts is 1980, find the number of students.

(i) If A: B = 1/4: 1/5 and B: C = 1/7: 1/6, find A: B: C. (ii) If 3A = 4B = 6C, find A: B: C

If a, b, c are in continued proportion, prove that: (a+b)/(b+c) =a2(b-c) /b2(a-b) (ii) 1/a3+1/b3+1/c3=a/b2c2+ b/c2a2+c/a2b2 (iii) a: c = (a2 + b2): (b2 + c2) (iv) a2b2c2 (a-4 + b-4 + c-4) = b-2 (a4 + b4 + c4) (v) abc (a + b + c)3 = (ab + bc + ca)3 (vi) (a + b + c) (a – b + c) = a2 + b2 + c2

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