Math, asked by rahulrohith, 1 month ago

Find cos 20° + cos 40° + cos 140° + cos160°

Answers

Answered by sonideviy821

0

Answer:

hhfjohokrjejsjwhsjhdjdisoalqldhfhfujz

Answered by sayyedalfiya01

1

Step-by-step explanation:

cos20+cos40+(-cos(180-140))+(-cos(180-160))

cos20+cos40-cos40-cos20

0

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