Question

if cos alpha/cos bita=m and cos alpha/sin bita =n then show that m^2+n^2×cos^2bita=cot^2thita​

Answer 1

Step-by-step explanation:

The ratio of their atomic masses:

Carbon dioxide, (CO

2

)=C:O=12:32=3:8

Calcium oxide, (CaO)=Ca:O=40:16=5:2

Sodium Chloride, (NaCl)=NaCl=23:35.5

Magnesium sulphide, (MgS)=24:32=3:4

Hence, the correct match is option A.