PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo
1. If the points \(A(-3,9)\), \(B(a,b)\) and \(C(4,-5)\) are collinear and if \(a + b = 1\), then find \(a\) and \(b\).
 
Answer:
 
The value of \(a =\)
 
The value of \(b =\)
 
2. Let \(P(11,7)\), \(Q(13.5,4)\) and \(R(9.5,4)\) be the midpoints of the sides \(AB\), \(BC\) and \(AC\) respectively of \(\triangle ABC\). Find the coordinates of the vertices \(A\), \(B\) and \(C\). Hence find the area of \(\triangle ABC\) and compare this with area of \(\triangle PQR\).
 
Answer:
 
Coordinates of \(A =\) i,i
 
Coordinates of \(B =\) i,i
 
Coordinates of \(C =\) i,i
 
Area of \(\triangle ABC =\)
 
Area of \(\triangle PQR =\)
 
Area of \(\triangle ABC =\)  \(\times\) Area of \(\triangle PQR\).