Cos 210° = cos ( 180° + 30° ) - cos 30° = - √3/2
15 feet is what I came up with.
(3+4) (40+3) (30+4)
= 7 + 47 + 34
= (7+47) +35
= 54 + 35
= 89
Answer:
Step-by-step explanation:
If Δ JKL ~ Δ JHG , then
=
≠
⇒ triangles are not similar

b - 10 = 7
Take 10 to the other side.

b = 17
Multiply by 4 to isolate b

b × 4 = 17 × 4
4 and 4 cancels out
b = 68