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Trigonometry
Sines and cosine, angles and formulae.
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Here's where we cover basics, like the mean and median, along with links to more advanced statistics topics.
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Recently Asked Math Questions
VAT charged at 20%, so £19,800 represents 120% of price before VAT Sun, 17 Mar 2024 10:48:00 +0000
Highest common factor: "The highest common factor of two numbers is 6. The lowest common multiple of the same two numbers is 72. What are the number?" Sun, 17 Mar 2024 03:41:53 +0000
Vectors in equilibrium: A body is acted on by 3 forces in the (x,y)-plane. T_3 = 30.0j N, angle is 20.0 degrees, body is at equilibrium Mon, 18 Mar 2024 22:30:02 +0000
How to solve this? The first three terms of a different geometric progression are (4/3)cos^2(3theta), (16/9)cos^4(3theta), and (64/27)cos^6(3theta) Sun, 17 Mar 2024 23:46:25 +0000
Please help with this: In triangle XYZ, side y is 8cm, side z is 5cm, and the measure of angle Y is 75 deg; find the length of side x Mon, 18 Mar 2024 20:56:42 +0000
Please help: On an athletic field, the length of one running track is exactly 400 meters. What is the distance between the front and back lines? Thu, 14 Mar 2024 06:11:22 +0000
How would you solve positive integer adding to a certain number questions. Mon, 18 Mar 2024 21:04:16 +0000
5th grade math question: 5 packages. 12 people. How much does each person get? Wed, 13 Mar 2024 12:36:42 +0000
Help me please: The boat is at anchor at a point where the water depth is 7.5 meters. The length of the anchor rope is exactly 10 meters. What is... Thu, 14 Mar 2024 06:12:10 +0000
Proof that minus a minus is positive Mon, 11 Mar 2024 08:36:07 +0000
Simple Short Question about Probability: lottery consists of 200 tickets and two prizes. 1st prize ticket is drawn and then, w/o replacement,... Mon, 18 Mar 2024 02:56:04 +0000
Queuing theory: At a computerized Rail Reservation window, the customer arrivals are considered to be Poisson with an average inter-arrival time of... Sun, 17 Mar 2024 06:51:44 +0000
calculus problem: For which non-negative values of a does the function y=(x^2+3x)/x+a have a clear discontinuity point? Tue, 19 Mar 2024 00:55:16 +0000
f(x) = sqrt( (e^x) - 1 ): find the domain, find 1st and 2nd derivatives, and test for concavity Mon, 18 Mar 2024 21:52:43 +0000
Please help me understand and solve the second-order DM: yy" + y = (y')^2 Mon, 18 Mar 2024 16:08:09 +0000
Burgers equation: du/dt + u * du/dx - v* (d^2u/dx^2) = 0, with u(x,0)= 2 for x < 0 u(x,0)= 0 for x >/= 0 Mon, 04 Mar 2024 07:12:26 +0000
help please Mon, 18 Mar 2024 20:53:28 +0000
Prove that (A \ B) ∩ (B \ A) = ∅ using mostly formal logic Sun, 17 Mar 2024 11:30:58 +0000