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25-06-2020
Mathematics

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Verify the identity algebraically. 7 sec(y) cos(y) = 7

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mathstudent55 mathstudent55

25-06-2020

Answer:

7 sec(y) cos(y) = 7

Use identity sec(y) = 1/cos(y).

7 * 1/cos(y) * cos(y) = 7

7 * 1 = 7

7 = 7

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