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math doubts [NEW]

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zara:

--- Quote from: Z.J. on October 31, 2009, 11:55:29 am ---Q3)Given that the equation


[sin(theta) - cos(theta)]/[sin(theta)+cos(theta)] =6sin(theta)/cos(theta),

find the exact values of tan(theta).Hence find (theta) for 0<=(theta)<=360

--- End quote ---
some one solve this ques plz...

falafail:

--- Quote from: Z.J. on October 31, 2009, 12:53:44 pm ---some one solve this ques plz...

--- End quote ---



i believe this is how it's done.
feel free to ask if you need me to explain anything, or to correct me if i'm wrong XD

oh, the picture's too small. here: http://i33.tinypic.com/308wg0p.jpg

nid404:
yaa...that's that

By the way if you don't want to confuse urself bt taking tan2theta and then substituting

assume tan theta=x and then solve. Get value for x then sub tan theta in it

and yeah use periodic property to get the answer within the given range

zara:
Q5)The straight line y=x-1 meets the curve y=x2-5x-8 at the points A and B. The curve y=p+qx-2x2 also passes through the points A and B. Find the values of p and q.

zara:
n yea whats the equation of a circle that has say 8cm as diameter? O_o

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