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Earn +20 ptsQ: What is the cosine of 3 pi divided by 4?
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Continue Learning about Geometry
What angle is Sine and cosine equal?
at a 45 degree angle, or pi/4
How do you find the area of three quarters of a circle?
You find the area using Pi x radius squared then multiply that by 3/4.
How do you find cosine squared at 30 degrees?
cos(30) = sqrt(3)/2 so cosine squared is 3/4.
What is 81 divided by pi?
25.7831 (to 4 dp)
What is the volume of a sphere with diameter 3m?
~14.1372 V=(4/3)pi r^3 V=(4/3)pi (1.5)^3=(4/3)pi 3.375=4.5pi~14.1372
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