Recent content by PPHT123

  1. PPHT123

    Solving Trigonometry Problems: How to Find CE Using the Cosine Rule

    You succeeded to express CB (or CA) in terms of L , a and b. Then what is CB sin(b) ?
  2. PPHT123

    Solving Trigonometry Problems: How to Find CE Using the Cosine Rule

    angle ACB = 180 - a -b you can try to use L/sin(180-a-b) = ??
  3. PPHT123

    Solving Trigonometry Problems: How to Find CE Using the Cosine Rule

    I think using sine rule to find a side first is a faster way
  4. PPHT123

    Courses Choose Physics or Mathematics for University?

    I don't know wether I should choose physics or mathematics in University. I'm very interested in theoretical physics described in those popular science books such as the string theory ,QED, relativity , and I want to become a theoretical physicist. But I'm not impressed by the physics taught in...
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