Question

sin (75*)=sin(45*+30*)​

Answer 1

Answer:

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Answer 2

sin(75)* = sin(45*+30*)

= sin(45*)cos(30*)+cos(45*)sin(30*)

$(1 \div \sqrt{2}) \times ( \sqrt{3 } \div 2) + (1 \div \sqrt{2} ) \times( 1 \div 2)$

$( \sqrt{3} + 1) \div 2 \sqrt{2}$