C2 Sin rule question HELLLP PLZ - The Student Room
In triangle ABC, AB= xcm, BC= (4-x)cm, angle BAC = y and angle BCA= 30 given that sin y= 1/sqrroot(2) (i.e. 2^-1/2), show that x= 4(sqrt2-1) PLease can someone show me how to do this i have been staring at it for ages and its just not going anywhere...why do the heinmann books always teach ya one thing den ask questions that go somewhere else completely erm ive figured out that y =45 degrees ...
Is 60% a 2.1 degree? HELP! - The Student Room
14 years ago. mn101. ImWithTheBand. Some graduate medical programmes still have an A level requirement, even though they also ask for a certain class of degree. For example, UCL is a 2:1 in an acceptable degree and BBB at A level (not sure if those A levels must include chemistry and biology, my guess is yes).
University degree classifications - The Student Room
2024年3月5日 · Below is a list of the possible classifications with the usual percentages for each class - but these percentages vary between subjects and universities: Classification. Mark. Open University Mark. First-Class Honours (a '1st') 70% and above. 85% and above. Upper Second-Class Honours (a '2:1') 60 - 69%.
What are the sin, tan, cos rules eg +180? - The Student Room
Sin is positive in the 1st And 2nd quadrant. Cos is positive in the 1st and 4th quadrant. Tan is positive in the 1st and 3rd quadrant. So now, looking at a question. Work out the two values of x . sin (1/2)=x. work out sin^-1 (1/2) on your calc and you will find out it is 30 degrees.
Science Extended Degree Huddersfield SED - The Student Room
2024年6月18日 · 3 months ago. Random233i. 3. Original post by username1244. Hi I recently just completed the science extended degree at Huddersfield, and managed to progress into optometry, if anyone has any questions about the course then fire away. No delays in answering questions as I was facing when researching about this course a year ago, I’ll try my ...
Sine rule using radians - The Student Room
So I have a triangle with angle 0.5 rad and sides 7cm and 8cm and I'm trying to use the sine rule to find angle x (i.e. 0.5/7 = x/8) but I keep getting the wrong answer, I'm just subbing the numbers in to the formula. Do I need to have my calculator in rad mode or convert to degrees then back to radians or what? Thanks!;/
C2 Question about Sin and Cosine - The Student Room
C2 Question about Sin and Cosine. This discussion is now closed. C2 Question about Sin and Cosine. Cos A can't equal (4/3). I'm guessing it's meant to be Cos A = (3/4) For part b, taking that cos A = 3/4: Cos A = 3/4 = A/H the adjacent is 3, hypotenuse is 4, Using pythagoras, the opposite is equal to (4^2 - 3^2)^1/2 = 7^1/2 Sin A = O/H = root 7/4.
AQA A AS Physics help mechanics!! - The Student Room
Basiclly he resolved each tension in to a horizontal and vertical component hence the sine and cosine. Because we are in equlibrium all the forces upwards must equal all the forces downwards. T1/2 comes from the fact that cos 60 equals 1/2
Cosine rule or 1/2absinC? - The Student Room
2024年5月16日 · The cosine rule expresses the length of a side, the sine rule expresses the area of the triangle. Ijustfiguredthatout.Thanks! Reply 3. 11 years ago. steve2005. 17. Original post by mir0rb. As far as I know, when using the cosine rule you need a triangle with 2 sides and an included angle. However, you need the same for 1/2absinC rule.
Physics question help - The Student Room
Physics question help. leopard923. 11. Two tugboats are towing a ship in a straight line Tug A is pulling with a force of 50kN at 60 degrees to the direction in which the ship is moving. Tug B is pulling at 30 degrees to the direction in which the ship is moving. Draw the sketch and then calculate the magnitude of: