What is the value of cos 180 and how to find it.
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cos 180°
= - cos ( 180 + 0 )
[ cos is negative in 3rd quadrant]
= - cos 0°
= -1
= - cos ( 180 + 0 )
[ cos is negative in 3rd quadrant]
= - cos 0°
= -1
niraj1222002:
Can you suggest me any source from where I can learn to find any value of trigonometric functions.
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