12th Maths – 30 Days – Scoring Worksheet – Day 1


 

XII Mathematics

30 Days –Scoring Worksheet – Day 1

 

Part  I- 5 Marks                                                          

1.     
Prove by vector method that the
perpendiculars (attitudes) from the vertices to the opposite sides of a
triangle are concurrent
 

2.     
Using vector method, prove that  cos(α 
+ β ) = cos α cos β – sin α sin β
 

3.     
Using vector method, prove that  cos(α 
– β ) = cos α cos β + sin α sin β
 

4.     
Using vector method, prove that  Sin (α 
– β ) = sin α cos β – cos α sin β
 

5.     
Using vector method, prove that  Sin (α 
+ β ) = sin α cos β + cos α sin β

 

 

 

S.Saravana
Kumar Msc., B.Ed., PGDCA

Jazz
Public Mat Hr Sec School, Melur , Madurai Dist

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7092681321 # 9597410308


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