Question

please help me I can't do this​

Answer 1

Step-by-step explanation:

left hand side= √ (cosec2θ - cot2θ)/ (sec2θ -1)

root 1/tan^2theeta

=root cot^2 theeta

=cot theeta

=root cosec^2 theeta-1

root (1/3/4)^2 -1

root (4 /3)^2 -1

root 16/9 - 1

root 16-9/9

root 7/9

root7/3

=RHS

root meaning in full question is square root,

hope it is helpful for u

Answer 2

Step-by-step explanation:

The parameters such as pH, turbidity, conductivity, total suspended solids (TSS), total dissolved solids (TDS), and heavy metals such as Cu, Zn, Mg, Fe, Cd, Pb, Cr, As, Hg, and tin (Sn) were analysed in each water sample