Question

5cos2 60+4sec2 30-tan45/sin2 30+cos2 30(the no. after cos,sec,sin means square).

Answer 1

{5*(1/4)}+{4*(4/3)}-{4}+{3/4}
=5/4+16/3-4+3/4

=. (15+64-48+9) /12
=40/12
=10/3