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= 1/2 + 2(√2/2)
= 1/2 + √2
= (1 + 2√2)/2
2) tan180° + 4sen60° + 5cos30°
= 0 + 4(√3/2) + 5(√3/2)
= 4√3/2 + 5√3/2
= (4√3 + 5√3)/2
= 9√3/2
Y lo demás ya lo resuelves.