SmarterEd

Aussie Maths & Science Teachers: Save your time with SmarterEd

  • Login
  • Get Help
  • About

Trigonometry, SMB-052

Find the value of \(x\), correct to 1 decimal place.  (2 marks)

Show Answers Only

\(x=13.9\ \text{m}\)

Show Worked Solution
\(\dfrac{x}{\sin43^{\circ}}\) \(=\dfrac{20}{\sin 78^{\circ}}\)  
\(x\) \(=\dfrac{20 \times \sin 43^{\circ}}{\sin 78^{\circ}}\)  
  \(=13.944…\)  
  \(=13.9\ \text{cm (to 1 d.p.)}\)  

Filed Under: Non Right-Angled Trig Tagged With: num-title-ct-pathc, smc-4553-20-Sine Rule

Copyright © 2014–2025 SmarterEd.com.au · Log in