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Does anyone know how to solve this hard question without using a calculator

Does anyone know how to solve this hard question without using a calculator-example-1
User Vzczc
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2 Answers

30 votes
30 votes

Answer:

sq rt 2/2

Explanation:

Use unit circle to find the answer.

User Justin Bennett
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13 votes
13 votes

\bold{FULL ANSWER:}
Does anyone know how to solve this hard question without using a calculator-example-1
User SashikaXP
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