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3cos^2 30° + sec^2±30° + 2 cos 0° + 3 sin90° - tan^2 60° |
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Answer» ONG>Step-by-step explanation: 3cos 2 30 ∘ +sec 2 30 ∘ +2cos0 ∘ +3sin90 ∘ −tan 2 60 ∘
=3(cos30 ∘ ) 2 +(sec30 ∘ ) 2 +2cos0 ∘ +3sin90 ∘ −(TAN60 ∘ ) 2
=3×( 2 3
) 2 +( 3
2
) 2 +2×1+3×1−( 3
) 2 = 4 9
+ 3 4
+2+3−3= 12 67
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