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junior college 1 | H2 Maths
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help thkss
Date Posted: 1 year ago
Views: 320
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Part I and ii
Date Posted:
1 year ago
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Part iii and iv, idk part IV is correct or not bcoz I m a sec 4 student self learning JC stuff while waiting for o level results
Date Posted:
1 year ago
Part iv not correct. Do note that x is small but does not approach zero. The workings are very much insufficient.
We need to use some approximations for sin x for small angles of x (we must first break sin (pi/6 - x) using a trigonometry rule) followed by using an expansion of (1 + kx)^n for negative values of n.
We need to use some approximations for sin x for small angles of x (we must first break sin (pi/6 - x) using a trigonometry rule) followed by using an expansion of (1 + kx)^n for negative values of n.
Supplemented my workings for part iv in a separate post.
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Supplemented the other answers with this version for part (iv).
Note that x is a small angle, but (pi/6 - x) is not, so we must refrain from applying the approximation for sine here.
Note that x is a small angle, but (pi/6 - x) is not, so we must refrain from applying the approximation for sine here.
Date Posted:
1 year ago
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