Sec 3/4 E Math T06-Q13 - Relating trigonometric ratios

Sec 3/4 E Math T06-Q13 - Relating trigonometric ratios

Secondary 3
Original parallel to Sec3&4 E Math FA

It is given that \(\sin \theta=\dfrac35\), where \(0^\circ<\theta<90^\circ\).

  1. Find the exact value of \(\cos\theta\).
  2. Hence, find the exact value of \(\tan\theta\).

Solution:

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Answer:(a) \(\dfrac45\); (b) \(\dfrac34\).

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