Question

1) find cos 12 - sin 78? ​

Answer 1

Answer:

$\cos(12) - \sin(78 )$

$\cos(90 - 78) - \sin(78)$

$\sin(78 ) - \sin(78)$

$0$

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

i hope that correct answer