Math I need help I'm trying to pass 6th
1 answer:
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Answer:
0.18 sec or 3.4 sec.
For second part, it will take 3.7 sec.
First part:
Set h(t) = 17and solve for t.
-16t²+ 58t + 7= 17
-16t² + 58t - 10 = 0
Solve this quadratic equation for t. You should get 2 positive solutions. The lower value is the time to reach 17 on the way up, and the higher value is the time to reach 17 again, on the way down.
Second part:
Set h(t) = 0 and solve the resulting quadratic equation for t. You should get a negative solution (which you can discard), and a positive solution. The latter is your answer.
So hmm checking the picture below
you can pretty much just use the pythagorean theorem to get the missing adjacent side
once you have that, you just get the cosine since the cosine is just adjacent/hypotenuse
as far as the sum with θ, those angles would be in your Unit Circle surely
and just expand the sum identity with those values
you can pretty much just use the pythagorean theorem to get the missing adjacent side
once you have that, you just get the cosine since the cosine is just adjacent/hypotenuse
as far as the sum with θ, those angles would be in your Unit Circle surely
and just expand the sum identity with those values