Respuesta :
The length of AC is approximately 12.9cm
Triangle identity
Given the following identity
- Opposite = AC
- Hypotenuse = 20cm
Using the SOH CAH TOA identity
sin 40 = AC/20
AC = 20sin40
AC = 20(0.6428)
AC = 12.9cm
Hence the length of AC is approximately 12.9cm
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