4. 〖2sin〗^2 3π/4+〖2cos〗^2 π/4+2〖sec〗^2 π/3=10

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4.〖2sin〗^2 3π/4+〖2cos〗^2 π/4+2〖sec〗^2 π/3=10
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4. 〖2sin〗^2 3π/4+〖2cos〗^2 π/4+2〖sec〗^2 π/3=10

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