Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 4 | E Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
Help
Date Posted: 6 years ago
Views: 269
you started off correctly.
I'm denoting the square of a quantity as sq.
26 sq = 9x sq + x sq - 6x sq cos(120)
cos 120 = -1/2 so
26 sq = 10x sq + 3x sq
26 sq = 13x sq
x = 2 sqrt(13)
I'm denoting the square of a quantity as sq.
26 sq = 9x sq + x sq - 6x sq cos(120)
cos 120 = -1/2 so
26 sq = 10x sq + 3x sq
26 sq = 13x sq
x = 2 sqrt(13)
See 1 Answer
360 Tutoring Program