Answer:
<h2>D = 28°</h2>
Step-by-step explanation:
To find angle D we use tan
tan ∅ = opposite / adjacent
From the question
DE is the adjacent
EF is the opposite
DE = 13
EF = 7
tan D = 7/13
D = tan-¹ 7/13
D = 28.3°
D = 28° to the nearest tenth
Hope this helps you
Answer
Step-by-step explanation:
cos x
( - 0.625, - 1.75 )
so since the first equation is already simplified , just replace it in the second equation
