Month: October 2016

Something I have learned this week in math

seanh2015 on

This week I have learned how to find an angle in a triangle using 2 sides. First you must label the triangle and figure out wether to use tan, cos, or sin. For this question you use cos, you also have two sides    (19 an 10) to find angle B I used the formula cos(b)10/19 you then change it to cos^-1(10/19) which equals 58 so angle B is 58 degrees. image

Latex coding

seanh2015 on

example 1: exponents

5^2

Example 2: two digit exponents

5^{-1}

example 3: fractions

\frac{3}{4}

Example 4: change size

\frac{5^2}{3^2}

Example 5: adding trig functions

\tan\theta=\frac{9}{12} \sin30^\circ=\frac{x}{2} x=cos^{-1}(\frac{3/4})

exampl 5: changing color

\frac{3}{4} \frac{3}{4}

Something I have learned this week in math 10

seanh2015 on

This week I have learned how to find the slant height, volume and surface area of a cone. To find the slant height you will use the pythagereum theorem ( A^2 + B^2 = C^2) or 15^2 (height) plus 8^2 (radius) equals C^2 (slant height) 15^2 plus 8^2 = 287 then you will find the square root of 287 which is the slant height.

for volume the formula is 1/3 (area of base) x H or 1/3(pie8^2)15 which equals 1005.3 centimeters cubed which is the volume.

to find surface area the formula is: Pie R^2 + Pie R S or in this case Pie8^2+Pie8(17) to find the approximate value you can just put that into your calculator but to find the exact value you will have to o a little more work. Pie8^2+Pie8(17) = Pie64+Pie136 = Pie200

image