CBSE Class 12-science Answered
18th sum plz
Asked by lovemaan5500 | 16 Dec, 2019, 09:34: PM
Expert Answer
If a and b are two units vectors inclined at an angle θ.
Prove that cos θ/2 = 1/2 (|a| + |b|)
and tan θ/2 = (|a|+|b|)/(|a| + |b|)
NOTE: Please post one question at a time.
Answered by Sneha shidid | 17 Dec, 2019, 09:20: AM
Concept Videos
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Scalar Product of two Vectors: introduction
This video explains how to find the scalar product of two given vectors. -
Scalar Product of two Vectors
This video explains how to find the scalar product of two given vectors. -
Scalar Product of two Vectors: Exam Prep Strategies ...
This video explains how to find the scalar product of two given vectors.
CBSE 12-science - Maths
Asked by lovemaan5500 | 16 Dec, 2019, 09:34: PM
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and 
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and 
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on the vector 
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, then show that 
or 
or 
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for which the projection of 
on the vector 
is 4 units.Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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and
, then show that the angle between the vectors 
and
is right angle.Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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are unit vector such that
then find the value of
.Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
