Given that
\(\cos A=k\)
such that \(A\) is an acute angle,
express
\(\tan(360^\circ-A)\)
in terms of \(k\).
\(-\dfrac{k}{\sqrt{1-k^2}}\)
\(\dfrac{\sqrt{1-k^2}}{k}\)
\(\sin x=t\),
where \(x\) is an acute angle,
\(\sin (90^\circ-x)\)
in terms of \(t\).
\(\sqrt{1-t^2}\)
\(-\dfrac{1}{\sqrt{1-t^2}}\)
\(\sin x=-0.7071\)
such that
\(180^\circ \lt x \lt 270^\circ\),
find the value of \(\tan x\).
\(-1\)
\(2\)
Sketch the graph of
\(y=|\cos {2x}|\)
for
\(0\le x\le2\pi.\)
Determine the equation of a suitable straight line to solve the equation
\(x-4\pi| \cos{2x}|=0.\)
Sketch the straight line and hence, state the number of solutions to the equation
\(x-4\pi| \cos{2x}|=0\)
\(6\)
\(8\)
Solve the equation
\(8 \sin^2 x=3+2 \sin x\)
\(0^\circ \lt x \lt 360^\circ\).
\(58.59^\circ,121.41^\circ,210^\circ,320^\circ\)
\(68.59^\circ,121.41^\circ,210^\circ,310^\circ\)
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