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CBSE Class 12-science Answered

18th sum plz
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Asked by lovemaan5500 | 16 Dec, 2019, 09:34: PM
answered-by-expert 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
CBSE 12-science - Maths
Asked by lovemaan5500 | 16 Dec, 2019, 09:34: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
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