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tiwaribianca475
16.11.2020 •
Mathematics
(HELP) In which pair do both decimals represent rational numbers
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Ответ:
Step-by-step explanation:
We are given a
where ![\angle K = 90^\circ](/tpl/images/0696/2151/ca839.png)
As per trigonometric rules,
Comparing the given value of tangent and cosine:
Perpendicular = 3 units
Base = 4 units
Hypotenuse = 5 units
Also, we know that:
Now, it is given that the triangle is dilated by a scale factor of
.
i.e. all the sides will become half of its initial values.
New Perpendicular = 1.5 units
New Base = 2 units
New Hypotenuse = 2.5 units
Using the formula for sine: