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secondary 3 | A Maths
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lana <3
Lana <3

secondary 3 chevron_right A Maths chevron_right Singapore

pls help me prove , thank uuuuu!!

Date Posted: 1 week ago
Views: 123

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Arnold K H Tan
Arnold K H Tan's answer
1660 answers (A Helpful Person)
1st
This is one possible approach
lana <3
Lana <3
1 week ago
how does the denominator become sinA/cosA - sinB/cosB
Arnold K H Tan
Arnold K H Tan
1 week ago
Divide each term by the term in blue.

Similar to
(xy - zy) ÷ (ay)
= (xy ÷ ay) - (zy ÷ ay)
= x/a - z/a
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Arnold K H Tan
Arnold K H Tan's answer
1660 answers (A Helpful Person)
Follow the purple writing - how the denominator is simplified