albertoosthuizen2204 albertoosthuizen2204

30-07-2022
Mathematics

contestada

Prove Sin(90-A)=cosA

Respuesta :

lucifer40 lucifer40

30-07-2022

Step-by-step explanation:

sin(90-A) = sin90cosA-sinAcos90

= cosA*1-0*sinA

= cos90

hence proved

Answer Link

armybae armybae

30-07-2022

Step-by-step explanation:

sin(90-A)=cosA

sin(90-A)=sin(90-A)

90-A=90-A

-A+A=90-90

=0

Ver imagen armybae

Answer Link

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