Math Class 9 and Class 10

Profit and Loss Sums Solution

• Math Solution Profit and Loss through Videos: Part 2
• Math Solution Profit and Loss through Videos: Part1
• Prateek travels from Agra to Delhi to buy goods which he get 10 % cheaper in Delhi

Algebra

• Express the following as a sum of perfect square | 16a2 + b2 + 9c2 – 4ab – 3bc – 12ca
• If    a2+b2+4c2 = ab+2bc+2ca | Expansion – Algebra

Trigonometry

• Diagonals of rhombus ABCD intersect each other at point O. Prove that OA2+ OC2=2AD2-BD2/2

• ABCD is a Rhombus. DPR and CBR are straight lines. Prove that: DP.CR=DC.PR
• In triangle ABC, AB > AC. | E is the mid-point of BC | and AD is perpendicular to BC
• OP, OQ and OR are drawn perpendiculars to the sides BC, CA and AB of &#x2206 ABC |Prove that AR2 +BP2 +CQ2 = AQ 2 + CP 2+BR2
• AB = BC and AD is perpendicular to CD. Prove that AC2 = 2.BC. DC
• ABCD is a parallelogram | Prove that &#x2206 BCF and &#x2206 DFE are equal in area
• Geometry Sum | ABCD is a square. Prove in each case ∆APD ≅ ∆BPC | Find Angle DPC Angle PCD and Angle PCD |

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