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marie darling
Questions (18)
To estimate the height of a building, two students find the angle of elevation from a point (at ground level) down the street
1 answer
7,392 views
The four sequential sides of a quadrilateral have lengths a=3.6, b=5.3, c=8.4, and d=10.2 (all measured in yards). The angle
2 answers
6,807 views
Solve 7 cos(2 theta) = 7 sin^2(theta) + 3 for all solutions 0 less than or equal to theta less than 2pi.
Solve 7 sin(2 w) - 4
3 answers
1,100 views
Find all solutions for the equation 3cos(x)=cot(x).
When do I use +2kpi? Is it only when I'm suppose to "find all solutions"? I
1 answer
1,009 views
Solve the equation
cos(2x)cos(x)+sin(2x)+sin(x)=1 for all values of x.
0 answers
355 views
Find the tan(x), the sin (x + pi) if it is known that cos (x)=.6 and that (3pi)/2 less than x less than 2pi.
Find the sine (2x),
3 answers
670 views
Find cos(t) where the terminal ray of the angle t radians in standard position passes though the point (-4,-3).
5 answers
2,473 views
I have a precalculus test coming up and I'm not really understanding how to do everything. Please help.
1. Find the angle betweem
1 answer
485 views
Solve sin(x) = -0.36 on 0 le x lt 2pi
There are two solutions, A and B, with A < B and A and B in radians to 4 decimal places.
3 answers
897 views
Solve cos(x) = -0.44 on 0 (less than or equal to) x (less than) 2pi
There are two solutions, A and B, with A < B Give your
0 answers
622 views
A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.77 nm. It then gives off a photon having a
0 answers
580 views
Here are the effective nuclear charges, Zeff, for the valence electrons of four different atoms. 1.30, 1.95, 2.60, 3.25 In
5 answers
3,766 views
A radio tower is located 450 feet from a building. From a window in the building, a person determines that the angle of
3 answers
5,302 views
Outside temperature over a day can be modelled as a sinusoidal function. Suppose you know the temperature is 80 degrees at
3 answers
40,389 views
The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ν0. Find the minimum
3 answers
4,129 views
Assuming that the smallest measurable wavelength in an experiment is 0.410 fm (femtometers), what is the maximum mass of an
1 answer
636 views
A truck with 48-in.-diameter wheels is traveling at 55 mi/h.
Find the angular speed of the wheels in rad/min, *hint convert miles
2 answers
4,446 views
Container A holds 767 mL of ideal gas at 2.50 atm. Container B holds 144 mL of ideal gas at 4.70 atm. If the gases are allowed
0 answers
660 views
Answers (8)
thank you for your help! These problems get really confusing when they don't provide a picture.
Thank you for your help! My numbers were way off haha.
le= less than or equal to lt = less than I keep getting numbers that are not on the unit circle and then when I try to plug them into my calculator I'm getting really big numbers. Please help. I've tried looking in my book but there are no problems like
or would it be (-3/5)/(-4/5)
okay so if I was suppose to find tan (t)it would be tan= -3/-4?
Thank you for your help!
le= (less than or equal to) lt= (less than)
thank you!!
