Question

5 cos 60° + 4 sec230° -tan 45º
sin 30° + cos²30°
​

Answer 1

5 cos 60° + 4 sec230° -tan 45º =5(1/2) + 4(-1.27) - 1

=3.58

sin 30° + cos²30° = 1/2 + (√3/2)^2

= 1/2 + 9/4

= 11/4