In ΔDEF, the measure of ∠F=90°, DE = 91 feet, and FD = 59 feet. Find the measure of ∠D to the nearest degree.
2 answers:
Answer:
50
Step-by-step explanation:
\text{SOH-CAH-TOA}
SOH-CAH-TOA
\cos D = \frac{\text{adjacent}}{\text{hypotenuse}}=\frac{59}{91}
cosD=
hypotenuse
adjacent
=
91
59
\cos D = \frac{59}{91}
cosD=
91
59
D=\cos^{-1}(\frac{59}{91})
D=cos
−1
(
91
59
)
D=49.583\approx 50^{\circ}
D=49.583≈50
∘
Type into calculator and round to the nearest degree.
D
E
F
59
91
(adjacent to ∠D)
Answer:
Step-by-step explanation: I need help now pls
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