. Sir I know all basics about it. Bit I m not able to solve some of above. So sir just give a hint of all rounded questions.plz sir..
Show that area of parallelogram is twice the area of triangle if they lie between same parallel and have ing same base
if absolute (z+x)=absolute(z-X) prove that the difference of the amplitudes of z and x is pie over 2
What is another name of step deviation, assume mean and direct method?