Tutors Answer Your Questions about Trigonometry-basics (FREE)
Question 317421: A passenger in an airplane at an altitude of 10 kilometers sees two towns directly to the east of the plane. The angle of depression of town a is 55 degrees and the angle of depression of town b is 28 degrees. How far apart are the towns?
Click here to see answer by Fombitz(13828)   |
Question 318552: On a test flight, during the landing of the space shuttle, the ship was 325 feet above the end of the landing strip. It then came in on a constant angle of 7.5 degrees with the landing strip. How far from the end of the landing strip did it first touch ground?
Click here to see answer by csr212(7) |
Question 318547: The distance s that an object falls due to gravity varies jointly as the acceleration g due to gravity and the square of the time t of fall. The acceleration due to gravity on the moon is 0.172 that on earth. If a rock falls for 2 seconds on earth, how many seconds would be required for the rock to fall an equal distance on the moon?
Click here to see answer by csr212(7) |
Question 318556: A jet is traveling westward with the sun directly overhead. That is, the jet is on a line between the sun and the center of the earth. How fast must the jet fly in order to keep the sun directly overhead? Assume that the earth’s radius is 3960 miles, the altitude of the jet is low, and the earth rotates about its axis once in 24 hours.
Click here to see answer by csr212(7) |
Question 318548: The escape velocity v a spacecraft needs to leave the gravitational field of a planet varies directly as the square root of the product of the planet’s radius R and its acceleration due to gravity g. For Mars and Earth:
Find for Mars if the escape velocity for earth,
Click here to see answer by Alan3354(31538)  |
Question 318803: An airplane has an airspeed of 510 km/h bearing 50 deg north of east. The wind is 70 km/h in the direction 33 deg north of west. Find the resultant velocity representing the path of the airplane with resprect to the ground.
Click here to see answer by CharlesG2(828) |
Question 319001: Can you help with the following problem?
For a different triangle a=312 mm, A=90°, and b=216 mm, calculate the length of c. (mm)
I tried using the pythagorean therom and plugging the values into a^2 + b^2 = c^2 , which gives me 379.473 but that answer is incorrect.
Click here to see answer by Fombitz(13828) |
Question 319280: Two men are diametrically on the opposite sides of a tower.They measure the angle of diameter of the top of a tower as 27 degree and 34 degree respectively.If the height of the tower is 50m.Find the distance between the two men.
Click here to see answer by nyc_function(2733)  |
Question 320007: 15) Edgar and Cordelia meet in a UMUC Math 009 classroom and find that they have a great deal in common in addition to their great love of algebra. Among other things, they both love long-distance bicycling, so they decide to conduct an algebra experiment. Edgar, who lives in Richmond, Virginia, and Cordelia, who lives in Baltimore, Maryland, set out simultaneously on their bicycles on an agreed-upon route, cycling toward each other. If Edgar averages 12 mph and Cordelia averages 15 mph, and if the total distance between their starting points is 162 miles, how long will it take them to meet? (Round your answer to the nearest tenth of an hour).
Click here to see answer by mananth(12270)  |
Question 321320: on june 12, 1991, pyroclastic explosion in mt. pinatubo occured. residents of house A located 15km from the volcano in the direction of 230 degrees were asked to evacuate. Another house B is located 14km away from A in thw direction S 40 degrees E. is the house B in danger zone if it was necessary to evacuate everyone within the radius of 20km. from the volcano?
Click here to see answer by galactus(183)  |
Question 321809: using basic trigometric identities, verify as indicated.
(tan B) (csc B) (cos B) = 1
The "B" is for beta, I need to see the steps to make the left side of the equal sign equal 1. Thanks for taking the time to look at this, it is appreciated.
Click here to see answer by Alan3354(31538) |
Question 321882: Find the acute angles of the right triangle with sides measuring: 3,4,5. I know the hypotenuse is 5 as it is the longest measurement. I tried putting the other numbers in to get the sine SinA b/5 SinA 4/5 =.0139 but the angle of this is not the right answer. I am having trouble understanding how to use sin, cos, and tan to find answers regarding angles and sides.
Thanks so much for all your time and help.
Click here to see answer by stanbon(57984) |
Question 321896: Sir/Madam,
How are you today,I am requesting you kindly to help me with 4 problems,I need to give positive values of the angle between 0degrees and 360degrees ,that will satisfy each and give approximate value to the nearest minutes.So far this is what i have tried: e.[sin(theta)=sqrt3/2] =[sin60dgrs=sqrt3/2]therefore,60dgrs and 120dgrs are the required value of(theta).f. (sin 2x=cos 2x)= (22 30',112 30',202 30,292 30')letter f,I have shown only the answer b'se of time. These are the 4 problems i need help with:
a.[sin(2x-10degrees)=1/2]; b.[cos 2x-sin^2(x/2+3/4)=0]; c.[sin^2(theta)=cos^(theta)+1/2]; d.[tan(x+15degrees)=3 tan x] P'se show work.Thanks much!
Click here to see answer by Alan3354(31538) |
Question 322061: I am so lost on this problem. If a baseball is hit a a 36 degree angle from 3 f above the ground with a velocity of 75 mph, how long is the ball in the air and how far from home plate will the ball land?
Here is what I have tried so far: v=110 ft/sec A=36 degree h=3 t = unknown
For the motion of a projectile: x = (v cos A)t and y =-16t^2+(v sin A)t+h
x = (110)(.8090)t x ~ 88.9919t
But what does that tell me? Can you please describe in detail how to solve this problem. I would appreciate the help so much.
Click here to see answer by galactus(183) |
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