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v_gurucharan (283)

Blazing goIITian

Olaaa!! Perrrfect answer. 47  [71 rates]

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Geometry
WRITE A PROOF (TWO-COLUMN OR PARAGRAPH) FOR THE FOLLOWING STATEMENT:  IF TWO PARALLEL LINES ARE CUT BY A TRANSVERSAL, THEN THE BISECTORS OF   THEIR ALTERNATE INTERIOR ANGLES ARE ALSO PARALLEL.  PLEASE HELP QUICKLY! I`M REALLY STUCK AND CONFUSED!! :(  


Geometry
I have a closet that is 3 ft. wide, 3 ft. deep, and 5 ft. high. Can I fit a  6 foot pair of skis inside?


Trigonometry
Solve for x between 0 <= x < 360    sin x + 2 csc x = 3


Trigonometry
An observer at a point A on a coast sights a ship in a direction of 37  degrees east of south. At the same time the ship is directly east of point  B, 19.0km due south of A. Find the distance of the ship from A.


6-8 Middle School
If a farmer can feed 4 cows for three weeks, then gets two more cows, how  many weeks will the food last? What is the formula for this question?


9-10 High School
It takes Melanie 20 minutes to walk to school. It takes 5 minutes if her  mom drives her by car. In one month, her total time travelling to school  was 5 hours. She went by car 8 times. How many times did she walk to  school?


9-10 High School
Each of two incinerators can process a day`s refuse in 20 hours. Together  with a third incinerator, they process the refuse in 6 hours. In what time  can the third incinerator do the job alone?
 PLS. SOLVE ALL OF THEM FOR A CLASS 9 STUDENT AND NOT FOR ME!!!
    
iitkgp_bipin (6144)

Forum Expert Blazing goIITian

Olaaa!! Perrrfect answer. 1044  bad job dude!! I dont approve of this answer! 1  [1508 rates]

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Please ask one question at a time.

sinx + 2cosecx = 3

sinx + 2/sinx = 3

sin2x - 3sinx + 2 = 0

(sinx-1)(sinx-2) = 0

Since -1<=sinx<=1 , sinx -2 can never be 0.

Hence, sinx-1 = 0

sinx = 1

x = (-1)nn + /2  where n is any integer.

Bipin Kumar Dubey
Chemical Dept.
IIT Kharagpur

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