Answer:
x=38.5
Step-by-step explanation:

cos(x)=
x=38.5(correct to the nearest tenth)
T+J=4 hours
x+2x=4 hours
3x=240 minutes
X=80 minutes
Answer:
x= 82y=78 tan =10
Step-by-step explanation:
greatest common factor=gcf
least common multule=lcm
with 12 and 16
factors of 12=2 times 2 times 3
factors of 16=2 times 2 times 2 times 2
greates common factor is 2 times 2=4
least common multiple means all factors combined minus repeats or 2 times 2 times 2 times 2 time 3=48
In this question, it is given that An inverse trigonometric function is used to find the value of an unknown obtuse angle in a triangle. The inverse function returns the angle 68°.
Since the angle is obtuse angle, it means the measurement of the angle is greater then 90 degree. And to find the angle measurement, we have to subtract the given angle from 180 degree.
So the unknown angle is

And that's the required answer .