In triangle ABC, BC = 29 units.
Given,
In Δ ABC, ∠A = 45°.
A perpendicular line segment traced from a triangle's vertex to its opposite side is said to be the triangle's altitude.
Let altitude meet AB on D.
So, AD = 20 units and DB = 21 units and ∠ADC = ∠BDC = 90°
In ΔADC,
tan A = DC/AD
tan 45° = DC/20
1 = DC/20
DC = 20 units
In ΔBDC,
BC² = BD² + DC² (Pythagorean Theorem)
= 21² + 20²
= 441 + 400
= 841
BC = √841
= 29
Hence, BC = 29 units.
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Answer:
6x+19
Step-by-step explanation:
distribute the six to get 6x+12+7
combine like terms 6x+19
move 19 to other side 6x=19
divide by 6
x=3.1666666667
Answer: 195mph
Step-by-step explanation:
1 + 1x
OR
1 + x
They mean the same thing! Hope this helps!
Answer:
61 degrees
Step-by-step explanation:
A right angle equals 90 degrees.
90-29= 61
