Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 4 | A Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
Pls help with this qns thank you
Date Posted: 7 years ago
Views: 717
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
For A) its a matter of using the pythagoras theorem to combine OD and OE.
For B) make use of the equation Rcos(x - a) = (Rcosa)cosx + (Rsina)sinx
Solve for R and A respectively
Anyway i'm guessing the tricky bit was C)? The question seemed pretty vague but im assuming the circles were as such (refer to the diagram I drew)
The 2 circles touching the x axis would form a minimum theta while the 2 circles touching the y axis would form the maximum theta
A little late but I hope this helps :)
For B) make use of the equation Rcos(x - a) = (Rcosa)cosx + (Rsina)sinx
Solve for R and A respectively
Anyway i'm guessing the tricky bit was C)? The question seemed pretty vague but im assuming the circles were as such (refer to the diagram I drew)
The 2 circles touching the x axis would form a minimum theta while the 2 circles touching the y axis would form the maximum theta
A little late but I hope this helps :)
Date Posted:
7 years ago
360 Tutoring Program