MythiliR698698
MythiliR698698
27-10-2022
Mathematics
contestada
cos2A+1what is it equivalent to?
Respuesta :
HaoranC714026
HaoranC714026
27-10-2022
Simplify the expression by using identities of trigonometry.
[tex]\begin{gathered} \cos 2A+1=\cos ^2A-\sin ^2A+(\cos ^2A+\sin ^2A) \\ =2\cos ^2A \end{gathered}[/tex]
So answer is,
[tex]2\cos ^2A[/tex]
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