Question

tan2 45+cos2 30+sin2 60

Answer 1

= tan^2 45 + cos^2 30 + sin^2 60
= 1 + 3/4 +3/4
= 4+3+3 / 4
= 10/4
= 5/2 

Answer 2

tan 45= 1 ; cos 30 =√3÷2 and sin 60 =√3÷2
=2(1) +2×√3÷2+ 2×√3÷2
=2+√3+√3
=2+2√3
2(1+√3)
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