Triangle PQR with side p across from angle P, side q across from angle Q, and side r across from angle R

Mathematics

2 answers:

svlad2 [7]3 years ago

4 0

Answer:

Step-by-step explanation:

Law of cosine expression for the triangle will be

q² = r² + p² - 2 (rp) cos Q

going by the equation r and p is given and Q is included then we can calculate q which corresponds to PR which faces or is subtended by angle Q. p correspond to QR and r correspond to PQ.

Mkey [24]3 years ago

4 0

Answer:

Step-by-step explanation:

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If a train traveled at 50 meters within 120 seconds, what is its speed?

Alja [10]

Answer:

v = 0.416 m/s

Step-by-step explanation:

Give that,

Distance covered by a train, d = 50 m

Time taken, t = 120 s

We need to find the speed of a train. The formula for speed of an object is equal to the total distance covered divided by total time taken. It can be given by :

$v=\dfrac{d}{t}\\\\v=\dfrac{50\ m}{120\ s}\\\\v=0.416\ m/s$