Year 9 Maths
Pythagoras Theorem and Trigonometry
Finding Side Lengths
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Questions
Question 1
205243
A right-angled triangle has a hypotenuse of \(15\) cm and an angle of \(40^\circ\). The side \(w\) is adjacent to that angle. Which equation should be used to find \(w\)?
\(\sin 40^\circ = \dfrac{w}{15}\)
\(\tan 40^\circ = \dfrac{w}{15}\)
\(\cos 40^\circ = \dfrac{w}{15}\)
\(\cos 40^\circ = \dfrac{15}{w}\)
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