Math, asked by sunilkandpal101, 8 months ago

cos80ºcos20º+sin80ºsin20º

Answers

Answered by divyanshparekh

0

Step-by-step explanation:

cos 80 = sin 10

sin 10 = cos 20

Attachments:

Answered by akshajchaudhary2005

0

Answer:

1/2

Step-by-step explanation:

cos(A-B)=cosAcosB-sinBcosA

refer to the above identity for solution

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