4/3tan^30 +sin^2 60-2cos^2 60 -2cos^2 60 +3/4 tan^60 -2tan ^2 45

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Your question is not clear and appears to be incomplete. Please mention the power of tan30 and tan60 Recheck your question and please be a little specific so that we can provide you with some meaningful help. Looking forward to hear from you again!
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