Answer:
Step-by-step explanation:
cos θ=sinθ
divide by cos θ
1=tan θ
tan θ=1=tan 45,tan (180+45)
θ=45°,225°
3 kilometres = 3,000 metres
so the ratio is 500 : 3000
= 1 : 3000/500
= 1: 6
Answer:
Step-by-step explanation:
5.7 + 2(w+1) = 2w + 9
5.7 + 2w + 2 = 2w + 9
7.7 = 9, which is impossible, so there is no solution.
:::::
-8(4+9r) = 7(-2-11r)
-32-72r = -14-77r
5r = 18
r = 3.6
