2 years ago

Question 2 Determine which triangle appears to be acute.

Mathematics

2 answers:

tatuchka [14]2 years ago

4 0

Number two because it has at least one acute angle

Liula [17]2 years ago

3 0

Number 2. Because I am in college

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In triangle ABC, a = 9, c = 5, and B = 120°. Find b2.

anygoal [31]

Answer:

(D) $b^2=151$

Step-by-step explanation:

Given: In triangle ABC, a=9, c=5 and ∠B=120°.

To find: The value of $b^2$ .

solution: It is given that In triangle ABC, a=9, c=5 and ∠B=120°.

Now, using the law of cosines, we get

$b^2=a^2+c^2-2(a)(c)cosB$

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Therefore, option D is correct.

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We are asked to convert the rate 0.992 atm/m to atm/km. We know that 1000 meters are equivalent to 1 km, using this factor we can compute:

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