P. Let ABCDEF be a regular hexagon with centre O, show that AB+AC+AD+AE+AF    (For other Questions, you can find    Jr. Inter Maths 1A  ,  Jr. Inter Maths 1B ,  Sr. Inter Maths2A  ,  Sr. Inter Maths2B    playlists in the You tube.)                                                                 (Our YouTube channel:   Maths Solutions by HPL ) Solutions to the below questions are also available in our You tube channel Maths 1A: 1.  If the points whose position vectors are 3i-2j-k,2i+3j-4k,-i+j+2k 2.   If a=2i+j-k, b=-i+2j-4k, c=i+j+k then find (a×b).(b×c) 3.  For A belongs to R, Prove that cosA.cos((π/3)+A).cos((π/3)-A)=1/4cos3A and 4.  Solve cot^2x-(√3+1)cotx+√3 5.  Prove that tan^(-1)(1/2) + tan^(-1)(1/5) + ta...

 P. Find the shortest distance between two skew lines r=6i+2k+2k+t    (For other Questions, you can find    Jr. Inter Maths 1A  ,  Jr. Inter Maths 1B ,  Sr. Inter Maths2A  ,  Sr. Inter Maths2B    playlists in the You tube.)                                                                 (Our YouTube channel:   Maths Solutions by HPL ) Solutions to the below questions are also available in our You tube channel Maths 1A: 1.  If the points whose position vectors are 3i-2j-k,2i+3j-4k,-i+j+2k 2.   If a=2i+j-k, b=-i+2j-4k, c=i+j+k then find (a×b).(b×c) 3.  For A belongs to R, Prove that cosA.cos((π/3)+A).cos((π/3)-A)=1/4cos3A and 4.  Solve cot^2x-(√3+1)cotx+√3 5.  Prove that tan^(-1)(1/2) + tan^(-1)(1/5) + tan^(-...

 P. In ∆ABC, prove that r+r1+r2-r3=4RcosC    (For other Questions, you can find    Jr. Inter Maths 1A  ,  Jr. Inter Maths 1B ,  Sr. Inter Maths2A  ,  Sr. Inter Maths2B    playlists in the You tube.)                                                                 (Our YouTube channel:   Maths Solutions by HPL ) Solutions to the below questions are also available in our You tube channel Maths 1A: 1.  If the points whose position vectors are 3i-2j-k,2i+3j-4k,-i+j+2k 2.   If a=2i+j-k, b=-i+2j-4k, c=i+j+k then find (a×b).(b×c) 3.  For A belongs to R, Prove that cosA.cos((π/3)+A).cos((π/3)-A)=1/4cos3A and 4.  Solve cot^2x-(√3+1)cotx+√3 5.  Prove that tan^(-1)(1/2) + tan^(-1)(1/5) + tan^(-1)(1/8) 6.  In ∆ABC,...

 P. lf A+B+C=π/2, then prove that cos2A+cos2B+cos2C=1+4sinA.sinB.sinC    (For other Questions, you can find    Jr. Inter Maths 1A  ,  Jr. Inter Maths 1B ,  Sr. Inter Maths2A  ,  Sr. Inter Maths2B    playlists in the You tube.)                                                                 (Our YouTube channel:   Maths Solutions by HPL ) Solutions to the below questions are also available in our You tube channel Maths 1A: 1.  If the points whose position vectors are 3i-2j-k,2i+3j-4k,-i+j+2k 2.   If a=2i+j-k, b=-i+2j-4k, c=i+j+k then find (a×b).(b×c) 3.  For A belongs to R, Prove that cosA.cos((π/3)+A).cos((π/3)-A)=1/4cos3A and 4.  Solve cot^2x-(√3+1)cotx+√3 5.  Prove that tan^(-1)(1/2) + tan^(-1)(1/5) + tan...

 P. By using Mathematical Induction, prove the statement:(1/1.3)+    (For other Questions, you can find    Jr. Inter Maths 1A  ,  Jr. Inter Maths 1B ,  Sr. Inter Maths2A  ,  Sr. Inter Maths2B    playlists in the You tube.)                                                                 (Our YouTube channel:   Maths Solutions by HPL ) Solutions to the below questions are also available in our You tube channel Maths 1A: 1.  If the points whose position vectors are 3i-2j-k,2i+3j-4k,-i+j+2k 2.   If a=2i+j-k, b=-i+2j-4k, c=i+j+k then find (a×b).(b×c) 3.  For A belongs to R, Prove that cosA.cos((π/3)+A).cos((π/3)-A)=1/4cos3A and 4.  Solve cot^2x-(√3+1)cotx+√3 5.  Prove that tan^(-1)(1/2) + tan^(-1)(1/5) + tan^(-1)(1/8...

 P. show that |abc bca cab|^2=|2bc-a^2 c^2 b^2 c^2 2ac-b    (For other Questions, you can find    Jr. Inter Maths 1A  ,  Jr. Inter Maths 1B ,  Sr. Inter Maths2A  ,  Sr. Inter Maths2B    playlists in the You tube.)                                                                 (Our YouTube channel:   Maths Solutions by HPL ) Solutions to the below questions are also available in our You tube channel Maths 1A: 1.  If the points whose position vectors are 3i-2j-k,2i+3j-4k,-i+j+2k 2.   If a=2i+j-k, b=-i+2j-4k, c=i+j+k then find (a×b).(b×c) 3.  For A belongs to R, Prove that cosA.cos((π/3)+A).cos((π/3)-A)=1/4cos3A and 4.  Solve cot^2x-(√3+1)cotx+√3 5.  Prove that tan^(-1)(1/2) + tan^(-1)(1/5) + tan^(-1)(1/8) 6....