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```				   if median of triangle are 5cm,6cm,7cm then find the area
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4 years ago

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### Answers : (1)

```										In case of mediansRemember the following formulae$A=(4/3)\sqrt{s_{m}(s_{m}-m_{1})(s_{m}-m_{2})(s_{m}-m_{3})} \\$Arun KumarIIT DelhiAskiitians Faculty
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2 years ago

if the line lx + my = 1 touches the circle x 2 + y 2 = a 2 Then the point (l , m) lies on the circle (a) a 2 (x 2 +y 2 ) = 4 (b) a 2 (x 2 +y 2 ) = 3 [c] a 2 (x 2 +y 2 ) = 2 (d) a 2 (x 2 +y...

Follow the equation of tangent to the circle. Compare l and m. Get values. Again put l and m in the equations.

 Charchit Tailong 10 months ago
Find the conditions on a and b such that line ax +by-1=0 intercepted bw lines ax+y+1=0 and x+by=0 subtend right angle at origin.

Find the intersection of ax+by=1 with 2 lines, you will get two points, (1/(a-1) , -1/[b.(a-1)]) and (-(b+1)/[a.(b-1)] , 2/(b-1)), To prove two point say A(x1,y1) and B(x2,y2) subtend angle ...

 Akshay 10 months ago
best book for calculus for iit and school 1)sk goyal 2)amit m agrwal

2

 vivek 7 months ago
min value valvue of 3^(sin^6 x) + 3^(cos^6 x)

Hint: Apply the condition that for two numbers, A.M. (Arithmetic mean) is always greater then or equal to their G.M. (Geometric Mean). Thanks.

 Vijay Mukati 10 months ago

2*3 1/4

 nikesh 10 months ago
please answer the question givenn in attatchment

Hint: Frst find the value of d 2 y/dt 2 and d 2 x/dt 2 then divide these two values to get d 2 y/dx 2 . Then finally put t = 0. Thanks.

 Vijay Mukati 10 months ago
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