Answer:
9
Step-by-step explanation:
72/8=9
Given that <span>cos a = 3/5 and it is in the first quadrant :
then:
a=arccos 3/5
but
cot </span>θ=1/tan θ
thus to evaluate our vale we shall obtain the value for height since
adjacent=3
hypotenuse=5
thus
using Pythagorean theorem:
c²=a²+b²
hence
5²=3²+b²
b²=25-9=16
b=4
thus
tan θ=opposite/adjacent
tan a=4/3
thus
cot a=1/(4/3)=3/4
Answer:
Step-by-step explanation:
i think its 6
5+5x = x^2 +9
x^2 -5x +4 =0
(x-4)(x-1)=0
x-4=0
x_1=4
and x-1=0
x_2=1
hope helped