9514 1404 393
Answer:
(b) P = 2(S -A) ÷ L
Step-by-step explanation:
Undo what is done to P.

Answer:
or 
Step-by-step explanation:
Given

Required
Find the possible values fo x

Square both sides


Equate to 0

Expand

Factorize:


Split:
or 
or 
or 
Answer:
40 degrees
Step-by-step explanation:
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