If tanθ = 15, then what is the value of secθ ?
\(\sqrt{226}\)
\(\dfrac{1}{\sqrt{224}}\)
\(\dfrac{1}{\sqrt{226}}\)
\(\sqrt{224}\)
If x + y = 5 and x2 + y2 = 17, then the value of (x - y)2 is equal to:
Solve for x:
\(\sin^{2}x - 4\sin x + 3 = 0,\; 0 \le x \le \dfrac{\pi}{2}\)
\(\dfrac{\pi}{2}\)
\(\dfrac{\pi}{4}\)
\(\dfrac{\pi}{6}\)
\(\dfrac{\pi}{3}\)