Question
Bahasa Melayu
Diberi bahawa $\sin P = -\frac{5}{13}$ dan $\cos Q = -\frac{2}{\sqrt{5}}$, dengan keadaan sudut $P$ dan sudut $Q$ berada di sukuan yang sama. Cari nilai bagi $\cos(P + Q)$, betul kepada empat angka bererti.
English
It is given that $\sin P = -\frac{5}{13}$ and $\cos Q = -\frac{2}{\sqrt{5}}$, where the angles $P$ and $Q$ lie in the same quadrant. Find the value of $\cos(P + Q)$, correct to four significant figures.
Tap to take a photo or choose an image
JPG or PNG acceptedWrite with Apple Pencil on iPad (or finger / mouse) — the AI reads your working and grades it.
Type your answer
Loading…
⌨ Math input▾
Modelled on Selangor trial · Kertas 2 · Q5(b)
Grading your answer... please wait
Modelled on Selangor trial · Kertas 2 · Q5(b)
Try it free — the AI marks 3 answers a day.
A free account marks 30 a day.
Sign up free →
📖 Input mode
Study the worked solution, then try one like it. Revealed questions aren't counted.
Back to practice mode