Math, asked by ppnworld1, 1 year ago

Prove that : Sin80°cos20°+sin45°cos145°+sin55°cos245°=0

Answers

Answered by saketh111

16

-1+1+2+4-6+1/√2-1/√2=0

Answered by Debrajm

30

Answer:

Step-by-step explanation:

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