Math, asked by BelalRahmani, 1 year ago

cos 840 degree solve question

Answers

Answered by vishakha81

33

Hi buddy☺

cos(840º) = cos (90º × 7 + 30º)

= -sin30°

= -1/2 = - 0.5

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Answered by shweta867

2

Answer:

cos(90×7+30)

-sin30

-1/2

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