Question

4 cosec2 60ᵒ + 3 cos 2 45ᵒ - 3 tan2 30ᵒ​

Answer 1

Answer:4(1/2)²+3(1/√2)²-3(1/√3)²

=4*1/4+3*1/2-3*1/3=3/2

[sin 30= 1/2,cos 45=1/√2, tan 30= 1/√3]

hope it helps pls mark as BRAINLIEST :D

Answer 2

Answer:

A/Q

4 cosec2 60° + 3 cos2 45° - 3 tan2 30°

= 4 (root2/3)^2 + 3 (1/root2)^2 - 3 (1)^2

= 4 (2/9) + 3 (1/2) - 3

=(4/1) (2/9) + (3/1) (1/2) -3

= 32/2 + 6/1 - 3

=16 + 6 - 3

= 22 - 3

= 19

I hope it is right