PUT ON YOUR THINKING CAP ....

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Across
  1. 3. Branch of Mathematics that deals with the study of triangles
  2. 5. Which type of triangles are applied in trigonometry
Down
  1. 1. How many trigonometric ratios are there ?
  2. 2. What is the multiplicative inverse of Cosine ?
  3. 4. Value of Tan 45