Math, asked by mooladeepthu9, 5 months ago

cos(120°+A) + cos(120°-A) = -cosA

answer is -cosA I want solution please answer fast and correct &fast please let me know this in google not coming

Answers

Answered by suvarnagharat768

0

Answer:

l hope ans is right

Step-by-step explanation:

90 degree
180 degree

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