Find the value of x in the given ratio 2x/21=12/18
2 answers:
You can use something called crossed multiplication (not sure the official name but something like that) basically when you have 2 fractions that equal to each other, you can multiply the numerator on the left-hand side with the denominator on the friction on the right side. and repeat the same with the numerator on the right side and multiply it by the denominator on the left. that way, there will be no more fractions and will just leave you simple algebraic equations.
so in here
so in here
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Answer:
42.3°
Step-by-step explanation:
Use SOH-CAH-TOA (O=opposite, A=adjacent, H=hypotenuse) we see that they give us the angle missing, x, but we first need to identify what method to use. They give us the opposite side from the angle, and they also give us the adjacent side from the angle, so TOA=tan.
now plug it in, since there is no angle then we plug it in as
in the calculator, (be sure to be in degree mode)
x= 42.3°
(does that make sense)