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secondary 4 | A Maths
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Priya
Priya

secondary 4 chevron_right A Maths chevron_right Singapore

Hi, I could not get the answer, could anyone help me.Thank you

Date Posted: 3 years ago
Views: 417
Eric Nicholas K
Eric Nicholas K
3 years ago
Both are correct, but the two constants are not the same constants.

The two “c”s have different values.

Think of trigonometric identities involving the two expressions.

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Calvin Wong Tuition
Calvin Wong Tuition's answer
63 answers (Tutor Details)
Please check if it is correct
Eric Nicholas K
Eric Nicholas K
3 years ago
Think again...

What happens if cos 2x is converted into “1 - 2 sin^2 x” instead?
Eric Nicholas K
Eric Nicholas K
3 years ago
And you missed out a “1/2” at the end...
Calvin Wong Tuition
Calvin Wong Tuition
3 years ago
Oh, yes. U r right
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Calvin Wong Tuition
Calvin Wong Tuition's answer
63 answers (Tutor Details)
This is the right working. Thanks to the other master