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Sine rule can also be used on the second part

Date Posted:
1 month ago

why is AF cos 41? why 41

Thus AF=TA(cos41)=56cos41

It is 41 because we have established in part a that angle TAF is 41 degrees which is equal to the angle of depression

why not cos 49

Is that to find (a)? If so then you can use it cos 49