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CBSE Class 12-science Answered

Plz asnwer 15 (ii)part
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Asked by lovemaan5500 | 07 Feb, 2020, 09:49: AM
answered-by-expert Expert Answer
Projection of a vector on the coordinate axes are 6, -3, 2
L e n g t h space o f space t h e space v e c t o r equals square root of 6 squared plus open parentheses negative 3 close parentheses squared plus 2 squared end root equals square root of 36 plus 9 plus 4 end root equals 7 T h e i r space d i r e c t i o n space cos i n e s space a r e space 6 over 7 comma space fraction numerator negative 3 over denominator 7 end fraction comma space 2 over 7
Answered by Renu Varma | 07 Feb, 2020, 12:14: PM

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CBSE 12-science - Maths
If |𝑎⃗| = 3 and −1 ≤ 𝑘 ≤ 2, then |𝑘𝑎⃗| lies in the interval (a) [0,6] (b) [−3,6] (c) [3,6] (d) [1,2]
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Asked by mohdtayyab682 | 18 Jan, 2023, 10:34: PM
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CBSE 12-science - Maths
Plz asnwer 15 (ii)part
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Asked by lovemaan5500 | 07 Feb, 2020, 09:49: AM
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CBSE 12-science - Maths
Write the position vector of point which divides the join of points with position vectors 3a-2b and 2a+3b in ratio 2:1. (a and b are vectors)
Asked by Vivek.d8765 | 29 Oct, 2019, 10:14: PM
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CBSE 12-science - Maths
Define unit vector.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Maths
Define co-initial and coterminous vectors.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Maths
Represent graphically a displacement of 500 m 60o south of east.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Maths
What is the parallelogram law of addition of vectors?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Maths
Find unit vector in the direction of vector .
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Maths
Prove that the sum of two vectors is commutative.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Maths
Find the value of x & y so that the vectors are equal.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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