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Without using a calculator or mathematical tables, express in surd form and simplify leaving your answer in the form a + b √c where a, b and c are rational numbers. 
   Cos 30º    
Tan 45 + √3

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√ 3/2   
1 +√ 3

√ 3        √ 3(2-2√ 3)
2 + 2√ 3     (2 + 2 √3 ) (2-2√3)
-2/8√3 + 3/4
3/4 – 1/4 √3

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