Math, asked by sgouhern, 1 day ago

cos 35º + cos 85° + cos 155º = 0

Answers

Answered by bhoomikasunithasures

3

Answer:

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Answered by mbhagyshree297

1

Answer:

Cos35 + cos85+cos 155

Cos(60-25)+cos(60+25)+cos155

2cos60cos 25+cos (180-25)

2*1/2 cos25 - cos 25

cos 25 - cos25=0

Step-by-step explanation:

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