Potatoes 's answer to Potato's Secondary 3 E Maths Singapore question.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Cos (theta) = -cos(180-theta)
Cos 150 = -cos(y)
Y=180-150
Y=30
Cos 150 = -cos(y)
Y=180-150
Y=30
Date Posted:
8 months ago
360 Tutoring Program