Josh has hiked 17 km, which is 2 km away from being 1/2 done. You are welcome!
Find cos using trig identities:
Therefore
Sub in tan x = 3, (Note that x is in 3rd quadrant, cos x < 0)
Finally, sub into Half-angle formula:(Note x/2 is in 2nd quadrant, tan x<0)
Answer:
The distance r is
Step-by-step explanation:
we know that
Applying the Pythagoras Theorem
where
c is the hypotenuse
a,b are the legs
In this problem we have
substitute and solve for r
The slope 3 is and the y-intercept is 6.