Question

2 tan square 30×sec2 30-9 cot square 60+ sin square 45​

Answer 1

Step-by-step explanation:

=2(.1/√3)^2×(2/√3)^2-9.(1/√3)^2+(1/√2)^2

=2.1/3.4/3-9.1/3+1/2

=8/9-3+1/2

=(8 -27+9)/2= -5/9