Trigonometry - How do you find the special sine, cosine and tangent angles?
VERIFIED
Shuheb Miah
Barts Medic| GCSE Maths & A-Level Science |5+years exp|40+ students|2500+ hours|
You can easily memorise the special angles in a grid (have a look on google) or you can work them out manually buy the use of two triangles. The first is an equilateral triangle of sides 2cm. Split it in half to make right angled triangles: Sides - 2cm 1cm root3cm Angles - 30 60 90 The second is an Isosceles right-angled triangle with sides - 1cm 1cm root2cm Angles - 90 45 45 Then use trigonometry to work out the special angle values
Shuheb also answered
Asked in Maths ๐ฏ
ASKED BY SOMERSBY
MATHS ๐ฏHow do you calculate the energy rating of an appliance?
You can use this formula to estimate an appliance's energy use: (Wattage ร Hours Used Per Day) รท 1000 = Daily Kilowatt-hour (kWh) consumption 1 kilo...
ASKED BY DIANA
MATHS ๐ฏThe tax rate on Jerome Jame's $112,000 vacation home is 25 mills. The property is assessed at full value. How much will Jerome pay in taxes this year? A. $780 B. $7,800 C. $2,800 D. $28,00?
Hello Diana. The Mills rate represents a figure amount per $1000 of the assessed value of the property (mills is derived from the Latin word "milles...
ASKED BY LACEY
MATHS ๐ฏExpress 540 as a product of its prime factor?
A prime number is one which does not divide into multiples of smaller numbers and are all odd numbers so not divisible by 2. For 540 you start by di...
ASKED BY LILY
MATHS ๐ฏHow do you make x the subject of an equation with fractions on each side? For example: v/7x=w/?
Your question is not clear and incomplete but if you mean (v/7x) = (w/y) Easiest way is to flip both sides upside down so (7x/v) = (y/w) Multiply bo...
ASKED BY ANNA
MATHS ๐ฏHow to do Pythagoras theorem?
Pythagoras theorem States that in a right angled triangle if you square the Hypotenuse c which is longest side facing the right angle (90 degrees) i...
ASKED BY JOSH
MATHS ๐ฏHow do I find the area of a triangle when I only know the three side lengths?
You need to know at least one angle otherwise it is impossible
ASKED BY FAITH
MATHS ๐ฏIncrease ยฃ14120 by 4%. Give your answer rounded to 2 decimal points?
4% of 14120 = 1.04x14120 = 14684.8
ASKED BY SARAH
MATHS ๐ฏHow do I plot a scatter graph with two sets of dat ?
Generate a graph with x and y. Plot the one set of data then plot the other one in a different colour. I am assuming that you are comparing the two ...
ASKED BY SOPHIE
MATHS ๐ฏHow do you work out what the equation of the parallel line to my=2x+3 and passes through (0,7) is?
If a line is parallel, then the equation of the parallel line will have the same gradient as the original line. In this case, the gradient of then p...
ASKED BY ANNIE
MATHS ๐ฏHow do you work out perimeter?
The perimeter of a shape is essentially just the combined length of its edges, so the simplest way to work out a perimeter is to work out the length...
Find me a tutor
We take your privacy seriously. View our policy.