a straight cab is rectangular, so the speakers point parallel to the ground. angled cabs have a slanted front so that speakers tilt up slightly. this makes the cab seem louder because the speakers are pointed more towards your ears. also, angled cabs help you hear the same tone that your audience does. speakers sound different at different angles, so if a speaker is angled exactly between your audience's ears and your ears, you'll get the same tone.
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Inside: acute angled triangleOn: right angled triangle Outside: obtuse angled triangle.
The measurements are taken at right angle to the survey line called perpendicular or right angled offsets. The measurements which are not made at right angles to the survey line are called oblique offsets or tie line offsets.
A right-angled triangle can have equal sides, but does not have to. A right-angled triangle with two equal sides CANNOT be an equilateral triangle. A right-angled triangle cannot be an equilateral triangle.Divide a square along the diagonal, and you are left with two right-angled triangles with two sides of equal length.
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how to find the perimeter of a right angled triangle using the area