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How do you solve this without using a calculator

How do you solve this without using a calculator
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How do you solve this without using a calculator

How do you solve this without using a calculator-example-1
asked
User Careem
by
7.5k points

1 Answer

6 votes

Answer:


C)\:\:(\sqrt 2)/( 2 )

Explanation:


\sin \bigg( (3\pi)/(4) \bigg) \\ \\ = \sin \bigg( \pi - (\pi)/(4) \bigg) \\ \\ = \sin \bigg((\pi)/(4) \bigg) \\ \\ = (1)/( √(2) )\\\\= (\sqrt 2)/( 2 )

answered
User Ben Dale
by
7.8k points
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