No, sound does not only reflect at 90 degrees. Sound waves can reflect at various angles depending on the surface they encounter and the angle of incidence, following the law of reflection, which states that the angle of incidence equals the angle of reflection. Smooth surfaces tend to produce clearer reflections, while rough surfaces can scatter sound in multiple directions.
No. Sound moves faster in a denser medium and the colder the air is the denser it is.
The complement of an angle is found by subtracting the angle from 90 degrees. Therefore, the complement of 120 degrees is 90 - 120 = -30 degrees. Since complements are typically defined only for angles between 0 and 90 degrees, 120 degrees does not have a valid complement.
90 degrees 90 degrees
The supplement of 90 degrees is the angle that, when added to 90 degrees, equals 180 degrees. Since 180 degrees minus 90 degrees equals 90 degrees, the supplement of 90 degrees is also 90 degrees. In other words, two angles that are supplementary add up to 180 degrees, and in this case, both angles are equal.
If you only know one angle, that angle is greater than 90 degrees, then the triangle is obtuse If that angles is equal to 90 degrees, then the triangle is a right triangle. If it is less than 90 degrees, you don't know enough information to classify the triangle.
only 90 degrees
Since there is only 90 degrees on each hemisphere of the earth, north and south, the 90 degree north latitude would be north pole and 90 degrees south latitude is the south pole.
Since there is only 90 degrees on each hemisphere of the earth, north and south, the 90 degree north latitude would be north pole and 90 degrees south latitude is the south pole.
Latitude only goes between 90 degrees south and 90 degrees north, so no.
Two angles are complementary if and only if their sum is 90 degrees.
An angle is 90 degrees if and only if it is a right angle.
No. Sound moves faster in a denser medium and the colder the air is the denser it is.
34°C is the warmer temperature. 90°F is only about 32.2°C.
The complement of an angle is found by subtracting the angle from 90 degrees. Therefore, the complement of 120 degrees is 90 - 120 = -30 degrees. Since complements are typically defined only for angles between 0 and 90 degrees, 120 degrees does not have a valid complement.
180 is double 90
90 degrees 90 degrees
90 degreesThere are 90 degrees in a right angle.There are 90 degrees in a right angle