PRACTICE SET - 1
MODEL PAPER
(Based On New Revised Syllabus)
Mathematics Class – 12
Unit - Vector Algebra
Q.1 Solve the following questions? [ 2 mark each ]
1.1 find the angle between vector i+j-k and vector i-j+k
1.2 find the angle between vector 2i+j+3k and vector 3i-2j+k
1.3 find the angle between vector i+j+k and vector i-j-k
1.4 find the angle between vector 2i+j+3k and vector 3i-2j+k
1.5 find the angle between vector i+j+9k and vector i-7j+k
Q.2 Find the unit vectors of the following vecors? [ 2 mark each ]
2.1 Find the unit vector of vector i+j-k
2.2 Find the unit vector of vector i+5j-k
2.3 Find the unit vector of vector 2i+j+3k
cos A = √b2+c2-a22bc
[ 8 mark each ]
Q.10 From Vector method, prove that in a triangle ABC:
SinAa = SinBb = SinCc
Sine Formula [ 8 mark each ]
Practice Set 2
very helpful! Sir.....Kindly please upload solutions of these questions
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