If a : b = c : d and e : f = g : h, prove that ae + bf : ae – bf = cg + dh : cg –dh
Answer
362.4k+ views
Hint: Here we have to multiply both the equations by dividendo and componendo. As per this rule, if $\dfrac{a}{b} = \dfrac{c}{d}$, Then this can be expressed as $\dfrac{{a + b}}{{a - b}} = \dfrac{{c + d}}{{c - d}}$
Complete step-by-step answer:
Note:
Complete step-by-step answer:
Given, $\dfrac{a}{b} = \dfrac{c}{d}$ —--- (1)
$\dfrac{e}{f} = \dfrac{g}{h}$ —-- (2)
Multiplying both the equation (1) and (2)
$\dfrac{{ae}}{{bf}} = \dfrac{{cg}}{{dh}}$
By dividendo and componendo
$\dfrac{{ae + bf}}{{ae - bf}} = \dfrac{{cg + dh}}{{cg - dh}}$
When faced with this type of problem, first convert the given form to a rational form that multiplies both equations and then apply the dividendo and componendo to obtain the final answer.
Last updated date: 30th Sep 2023
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