Question

5 cos^2 60°+ 4 sec^2 30° - tan^2 45°/ sin^2 30 + cos^2 30°

Answer 1

5 cos^2 60°+ 4 sec^2 30° - tan^2 45°/ sin^2 30 + cos^2 30°

= 5×(1/2)^2 + 4×(2)^2/3 - (1)^2/(1/2)^2 + 3/(2)^2

= 5/4 + 16/3 - 4 + 3/4

= 8/4 + 16/3 - 4

= 2 + 16/3 - 4

= -2 + 16/3

= (16-6)/3

= 10/3

HOPE THAT IT'S USEFUL FOR YOU