Question

A triangle ABC has the coordinates A(1,2,3),B(-1,-2,-3) and C(3,4,6). Calculate the perimeter and hence the area of the triangle ABC.

1. CosX Cos2X Cos3X=0

1^2−2^2+3^2−4^2+........+(2n+1)^2=−−−−−−−−−−

 13 question

Find the value of a and b if x-1 and x-2 are the factor of x³ -ax +b

Maths of class 11

Hello Sir,

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Aur ha Sir aapke paas English ke Notes bhi hoge to please Sir mujhe bhej dijiye please Sir 9519248290. 

                                Thank you so much Sir

• Locate Root 3 on the number line