Question

Please translate the videos to English pls

Please give entry for -loan taken from his uncle 5000

A,B,c arev three mutually exclusive and exhaustive events associated with a random experiment.find p(A) if it is given that p(b)=3/2 p(A) and p(C)=1/2 p(B).

sir 5.1, 5 question .. 

sir when we subtracting 1from to 

how can come -DC one side and +DC second side.

tell me sir i am not getting... plzzzz

Write (1/3+3i) in the form of a+ib

Sir i didn't understand how can we similarly prove that AB/DE= BC/EF

xcos (a+y)=cosy, Hence prove, y'=cos^2(a+y) / sina

28.5-30=(60-6x) /15