robert7248
03.05.2020 •
Mathematics
Use a special right triangle to express sin 45 degrees as a fraction
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Ответ:
Step-by-step explanation:
in a right angled triangle angles given are 45,90
Then third angle is also 45 °
as two angles are 45° each.
Then sides are also equal.
Let the equal sides be each =x
then hypotenuse=√(x²+x²)=√(2x²)=x√2
sin 45°=x/(x√2)=1/√2
Ответ:
Step-by-step explanation:
1