sin(0) = 0, sin(90) = 1, sin(180) = 0, sin (270) = -1 cos(0) = 1, cos(90) = 0, cos(180) = -1, cos (270) = 0 tan(0) = 0, tan (180) = 0. cosec(90) = 1, cosec(270) = -1 sec(0) = 1, sec(180) = -1 cot(90)= 0, cot(270) = 0 The rest of them: tan(90), tan (270) cosec(0), cosec(180) sec(90), sec(270) cot(0), cot(180) are not defined since they entail division by zero.
216/360 times 2pi which simplifies to 6pi/5. Rough figure 6 x 3.14/5 = 18.84/5 or 3.8 to the nearest tenth.
The sin of 30 is sqr(3)/2 so 6 * sqr(30) is 6 * sqr(3)/2 this is also 6/2 * sqr(3) which simplifies to 3 * sqr(3) which is approximately 5.19615242
A roof angle of 6 degrees = 1.26 / 12 rise or pitch.
You need to know the trigonometric formulae for sin and cos of compound angles. sin(x+y) = sin(x)*cos(y)+cos(x)*sin(y) and cos(x+y) = cos(x)*cos(y) - sin(x)*sin(y) Using these, y = x implies that sin(2x) = sin(x+x) = 2*sin(x)cos(x) and cos(2x) = cos(x+x) = cos^2(x) - sin^2(x) Next, the triple angle formulae are: sin(3x) = sin(2x + x) = 3*sin(x) - 4*sin^3(x) and cos(3x) = 4*cos^3(x) - 3*cos(x) Then the left hand side = 2*[3*sin(x) - 4*sin^3(x)]/sin(x) + 2*[4*cos^3(x) - 3*cos(x)]/cos(x) = 6 - 8*sin^2(x) + 8cos^2(x) - 6 = 8*[cos^2(x) - sin^2(x)] = 8*cos(2x) = right hand side.
6.00
6.00
5.61
Points: (6, 5) and (-3, -8) Distance: 15.81 to the nearest hundredth
4.14
To round 12.456 to the nearest hundredth, we look at the digit in the thousandth place, which is 6. Since 6 is equal to or greater than 5, we round up the digit in the hundredth place, which is 5. Therefore, 12.456 rounded to the nearest hundredth is 12.46.
6
6/11 rounded to the nearest hundredths place is 0.55
58.056The nearest hundred falls between the 5 (the hundredth) and the 6 (the thousendth). Since the thousendth is a 6, it's rounded upwards =58.06
30
37.69
153.86