5cos2 60+4sec2 30-tan45/sin2 30+cos2 30(the no. after cos,sec,sin means square).
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{5*(1/4)}+{4*(4/3)}-{4}+{3/4}
=5/4+16/3-4+3/4
=. (15+64-48+9) /12
=40/12
=10/3
=5/4+16/3-4+3/4
=. (15+64-48+9) /12
=40/12
=10/3
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