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Newbie

## Prove that : cosec^6θ -cot^6θ = 3 cot^2θcosec^2θ +1

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Prove this standard identity using algebraic identity (a+b)³=a³+b³+3ab(a+b) : cosec^6θ -cot^6θ = 3 cot²θcosec²θ +1.

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Newbie

## If the 3rd and the 9th terms of an A.P. are 4 and − 8 respectively. Which term of this A.P. is zero.

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this is question number 9 exercise 5.2 NCERT Maths solutions, chapter arithmetic progression

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Newbie

## Check whether -150 is a term of the A.P. 11, 8, 5, 2, …

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use formula last term= a+(n-1)d, to check -150 is a term of the A.P. 11, 8, 5, 2, ….

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Newbie

## Find the area of a rhombus if its vertices are (3, 0), (4, 5), (-1, 4) and (-2,-1) taken in order.

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Find the Area of the Rhombus. Hint : Area = ½× d1× d2

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Newbie

## Find the coordinates of the points of trisection of the line segment joining (4, -1) and (-2, -3).

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Use section Formula to find the coordinates of points of trisection.

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Newbie

## Find the point on the x-axis which is equidistant from (2, – 5) and (- 2, 9).

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Use the distance formula to find the points on the x-axis which is equidistant from (2, – 5) and (- ...Read more

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Newbie

## Prove that : ( cos A–sin A+1)/( cos A +sin A–1) = cosec A + cot A, (using the identity cosec^2A = 1+cot2A).

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Prove the following identities, where the angles involved are acute angles for which the expressions are defined. NCERT Maths Solutions class ...Read more