If AB = 15, BC = 12, and CA = 8, list the angles of abc in order from smallest to largest.
2 answers:
Answer:
The list the angles of triangle ABC in order from smallest to largest is ∠B, ∠A and ∠C.
Step-by-step explanation:
Given information: In ΔABC, AB = 15, BC = 12, and CA = 8.
In a triangle, opposite side of the largest angle is largest, opposite side of the medium angle is medium and opposite side of largest angle is largest.
Arrange the sides in ascending order.
The opposite angels of CA, BC and AB are ∠B, ∠A and ∠C respectively.
Therefore the list the angles of triangle ABC in order from smallest to largest is ∠B, ∠A and ∠C.
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Answer:
10 units
Step-by-step explanation:
Given that:
Cos a = 3 /5
From trigonometry ;
Cos θ = Adjacent / hypotenus
Side Adjacent angle a = 3 = FD
Hypotenus = 5 = DE
3 / 5 = FD / DE
FD = 6 units
3/5 = 6/DE
DE * 3/5 = 6
DE = 6 ÷ 3/5
DE = 6 * 5 /3
DE = 30 /3
DE = 10 units
