Question

if cosec theta minus cot theta is equal to 1 by p , then prove that cos theta equal to p square minus 1 by p square plus 1?​

Answer 1

Answer:

hope it's helpful

Step-by-step explanation:

Atomic number (Z)=15=P→[Ne]3s

2

3p

3

Phosphorus belongs to 15th group

number of valence electrons 3s

2

3p

3

=5

and valency =3 in ground state.

Hence, the correct option is C