Recent Homework Questions About Trigonometry
My sketch is a triangle with sides 16, 24 and 28 , and I am looking for the angle Ø opposite the 28 by cosine law 28^2 = 16^2+24^2 - 2(16)(24)cosØ 768cosØ = 48 cosØ = 48/76 Ø = 50.8°
Monday, May 27, 2013 at 12:49am
in the diagram below.A,B and C are three points in the same horizontal plane and AD is a vertical tower.AC=AB=x and DC=DB.the angle of elevetion of D from C is alpha and DB^C=theta 1.express DC in terms of x trigonometry value of alpha 2.prove that BC=2xcostheta/cos alpha
Sunday, May 26, 2013 at 10:54am
please am stucked help me.in the diagram below.A,B and C are three points in the same horizontal plane and DC is a vertical tower.AC=AB=x and D^C=DB.the angle of elevation of D from C is alpha and DB^C=theta
Sunday, May 26, 2013 at 7:31am
How to get quick responses to your math questions
Math is a wide subject, ranging from K to 11, college and university. Then there is algebra, trigonometry, geometry, arithmetic, calculus, number theory, ... etc. Not all teachers answer all math questions (many do). If you would give a little more detail on which branch of ...
Saturday, May 25, 2013 at 9:45am
So on the Cartesian plane, it is in the fourth quadrant, with x-y as (900,-500). Atan(-500/900)= -29° approximately. So the bearing is S61°E.
Saturday, May 25, 2013 at 3:44am
you are exactly right tan(4x) = 2tan2x/(1-tan^2(2x)) so, cot(4x) is the reciprocal, as needed.
Thursday, May 23, 2013 at 2:56pm
TRIG Help help help test tommarow
(h+1250)/1150 = tan 52°
Wednesday, May 22, 2013 at 6:48pm
what is 40Sin65? This is physics? Most folks would call this basic trig functions.
Monday, May 20, 2013 at 4:20pm
Mathematics Ms Sue help
for the building, h/18 = tan 88° for the boat, d/40 = sin 65° for stuff like this, it always helps to draw a diagram, then dig into your box of trig ratios
Monday, May 20, 2013 at 4:09pm
by test time you need to know the "standard" angles with easy-to-recall trig functions 0,π/6,π/4,π/3,π/2 If you know those angles and their trig ratios, you will recall that tan π/3 = √3 Now, recall the bit about principal values of ...
Saturday, May 18, 2013 at 9:37am
Can someone please give me a step by step answer on how to find the complex cube roots of 8(cos(4π/5)+isin(4π/5))? I need to know how to do this for my trig final next week.
Friday, May 17, 2013 at 5:01pm
I don't understand how to convert -3-4i to polar coordinates. I need to know how so I am ready for my trig final next year. Can someone please show me step by step how to solve this? Thanks
Friday, May 17, 2013 at 3:31pm
Can someone please show me step by step how to calculate the modulus and the argument for these complex numbers? I have a trig final next week and I am trying to finish this study guide so I am prepared. Thank you so much! If you can, please show my how you get the answer so I...
Friday, May 17, 2013 at 9:11am
Can you please help me with this question on my study guide for my trig final? Thanks! I'd also appreciate if you can check out my other postings and check my work for some other study guide questions. I want to make sure I'm ready for my final. :) 4. Transform each ...
Thursday, May 16, 2013 at 11:29am