Question

sec + tan sec /− tan = = ( 1 + / cos ) ²​

Answer 1

Answer:

.He had a close association with Emperor Akbar

Answer 2

Answer:

Solution:- (A) 114.72g.

Given that specific heat of metal =0.057calg

−1

According to Dulong Petit law,

Approximate atomic weight=

specific heat

6.4

=

0.057

6.4

=112.28g

Equivalent weight of metal =38.24g(Given)

Now applying-

valency=

Equivalent weight

Approximate atomic weight

=

38.24

112.28

=2.93≈3

∴Exact atomic weight=valency×Equivalent weight

⇒Exact atomic weight=3×38.24=114.72g

Hence the exact atomic weight of metal is 114.72g.