Math, asked by 9812240132, 1 year ago

Cos 40Cos20-Sin40Sin20
Ans

Cos(A+B) =Cos(40+20)

Cos(60) =1/2

Answers

Answered by ayushsoni032

2

Answer:

To main kya karoon. Vaise cos60 ka value sahi h.

Answered by mittalhimanshi37

0

Answer:

cos(40+20) - sin(40+20)

cos(60)-sin(60)

(1/2)-(√3/2) = (1-√3)/2

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