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09-02-2019
Mathematics

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sin(theta)+cos(theta)=0 what is theta? 20 points someone please help (A-Level pure maths)

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mathecoach mathecoach

09-02-2019

Answer:

sin(theta) + cos(theta) = 0

sin(theta) = -cos(theta)

sin(theta)/cos(theta) = -1

tan(theta) = -1

theta = - 45° ± k·180°

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