See AC Lim's answer to chae's Secondary 3 E Maths Singapore question

AC Lim's answer to chae's Secondary 3 E Maths Singapore question.

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Hope this helps

Date Posted: 9 months ago

Comments 2 add a comment

Chae

9 months ago

thanku for the quick response! but may i know why is (ii) square root minus and not plus? as far as i know it’s ab^2 = ac^2 + bc^2 ( which i got the wrong answer )

AC Lim

9 months ago

Angle PCA is right angle (90°)
So PC² = PA² - AC²

Another word
PA²= PC² + AC²

AC Lim's answer to chae's Secondary 3 E Maths Singapore question.

Ac Lim's answer

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