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BETTER CHOICE PUBLICATION-VECTOR ALGEBRA -SOLVED EXAMPLES SECTION III
- Find veca.vecb If veca=3hati-hatj+2hatk and vecb=2hati+3hatj+3hatk
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- Find |vecx|, if for a unit vector veca, (vecx - veca)cdot(vecx+veca)...
04:21
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- Find |veca| and |vecb|, if (veca+vecb)*(veca-vecb)=8 and |veca|=8|vecb...
02:31
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- Find the angle between the vectors veca=hati-2hatj+3hatk and vecb=3hat...
04:32
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- If veca=5hati-hatj-3hatkandvecb=hati+3hatj-5hatk then show that the ve...
03:05
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- Find the value of lambda sach that the vectors 3veca+4vecb and 2veca+v...
05:52
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- Show that each of the given three vectors are mutually perpendicular u...
08:37
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- Prove that (veca+vecb) cdot (veca+vecb) = |veca|^2 + |vecb|^2, if and ...
03:37
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- Show that |veca|vecb + |vecb|veca is perpendicular to |veca|vecb-|vec...
05:08
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- If veca, vecb, vecc are unit vectors such that veca+vecb+vecc=0, find...
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- The projection of veca=2hati+3hatj+2hatk on vecb=hati+2hatj+hatk is eq...
04:52
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- Find lambda when the scalar projection of veca=lambdahati+hatj+4hatk o...
02:49
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- Show that the points : A(2hati-hatj+hatk),B(hati-3hatj-hatk),C(3hati-4...
08:34
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- If the vertices, A, B, C of DeltaABC have position vectors, (1,2,3),(-...
05:39
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- If veca=hati+4hatj+2hatk , vecb=3hati-2hatj+7hatk and vecc=2hati-hatj+...
08:18
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- Express the veca=5hati-2hatj+5hatk as sum of two vectors such that one...
05:42
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- Use vectors to prove that in triangleABC : a=bcos C+c cos B.
06:25
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- With the help of vector method, prove that,cosC=(a^2+b^2-c^2)/(2ab)
04:53
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- Find |veca X vecb|,if veca=hati-7hatj+7hatk and vecb=3hati-2hatj+2hatk
03:31
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- Find the work done by a force vecF=4hati+hatj-3hatk, which displace th...
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