Answer: You meant a picture?
Step-by-step explanation: The model is here:
Answer:
c =√a2 + b2=√152 + 122=√369=19.20937
∠α =arcsin(a)c= arcsin(15)19.209372712299=arcsin(0.78086880944303) = 51.34° = 51
answer is C
Answer:
x = 3
Step-by-step explanation:
3 ( x + 1 ) = 5 ( x- 2 ) + 7
Expand
3 x + 3 = 5 x - 10 + 7
Minus 5 x from both sides
- 2 x + 3 = - 10 + 7
Minus 3 from both sides
- 2 x = - 10 + 4
Simplify
- 2 x = - 6
Divide both sides by - 2
x = 3