LCM=180
hope this helps!!!:)))
Answer:
40 i think
Step-by-step explanation:
Answer: 121
Step-by-step explanation:
do 11 times 11. There are 11 people and if everyone shook hands, then 121.
Answer:
34 rounded is 30
Step-by-step explanation:
15 plus 15 is 30 30 plus 4 is 34
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.
To learn more about triangle here
brainly.com/question/2272632
#SPJ1
