Question

evaluate:
5 cos² 60° + 4 sec² 30° - tan² 45°/ sin² 30° + cos² 30°​

Answer 1

Step-by-step explanation:

=5*(1/2)^2 + 4(2/square root 3)^2 - (1)^2/ (1/2)^2 + ( square root 3/2)^2

=5*1/4 + 4*4/3 - 1 / 1/4+ 3/4

= 5/4 + 16/3 - 1

= 15+64-12/12

=67/12

=5 7/12