Recent content by Mewtwo

  1. M

    The time it takes this thing to travel across 3 points

    Hey! I have a problem that I have no clue how to solve. So I was hoping you guys could help me. I'm not from an English speaking country so I apologize. Homework Statement A thing is made to travel in water and on land. In water it travels with 20 m/s speed but on land with 25m/s speed. The...
  2. M

    Use the cosinus law to prove this formula

    ok I got this http://www4c.wolframalpha.com/Calculate/MSP/MSP44471a050d98d94cbeec000020fe90ga7i8984hb?MSPStoreType=image/gif&s=9&w=210&h=54 Is that correct?
  3. M

    Use the cosinus law to prove this formula

    So I get http://www4c.wolframalpha.com/Calculate/MSP/MSP48411a050dgeddd2i67000003ecabg685d804cd1?MSPStoreType=image/gif&s=18&w=112&h=18 ?
  4. M

    Use the cosinus law to prove this formula

    ok 0.5 so I get http://www4c.wolframalpha.com/Calculate/MSP/MSP11051a050h26b3g19eba000052d70cgif2ch1ich?MSPStoreType=image/gif&s=16&w=112&h=18 ?
  5. M

    Use the cosinus law to prove this formula

    So I get http://www4c.wolframalpha.com/Calculate/MSP/MSP6381a050h93gegh83bh00001796145faf9g758g?MSPStoreType=image/gif&s=35&w=178&h=18 ? Sorry if I'm slow :/
  6. M

    Use the cosinus law to prove this formula

    Sorry, but what do you mean? I know the cosine law is: http://www4c.wolframalpha.com/Calculate/MSP/MSP45341a050abcb84ib7df000067dfbce6f994ai94?MSPStoreType=image/gif&s=10&w=167&h=18 but I just don't know what to do with it. Should I solve for c?
  7. M

    Use the cosinus law to prove this formula

    Hey! I have a problem here that I can't solve, help would be greatly appreciated. Homework Statement In a triangle ABC with sides a, b and c, B is 60°. Use the cosinus law to prove this formula...