Joemaridn
Answered

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In the right triangle DEF, angle D is 30deg, and side DF is 6 inches.how long are sides d and f?what is angle E, side f and d?

Sagot :

AnneCidn
Angle E = 90º


[tex]sin D = \frac{d}{FD} [/tex]
[tex]d = (sinD)(FD)[/tex]
[tex]d = (sin30^o)(6)= \frac{ 1}{2}(6)=\boxed{3 in}[/tex]


[tex]cosD= \frac{f}{FD} [/tex]
[tex]f=(cosd)(FD)[/tex]
[tex]f=(cos30^o)(6)= \frac{ \sqrt{3} }{2} (6)=\boxed{3 \sqrt{3}in }[/tex]
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