Math, asked by harsheinstein45, 1 year ago

$find \: the \: value \: of \: cos120$

Answers

Answered by TheKnowledge

1

very simple !!!

cos (180-60)

- cos 60°

=> -1/2

hope it help you !
thanks!!
thanks

Answered by ItzKrinna

2

Answer:

HELLO DEAR☺️

cos120

=cos(90+30)

=-sin(30)

= -½

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