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