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secondary 3 | E Maths
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Ugandan Knuckles
Ugandan Knuckles

secondary 3 chevron_right E Maths chevron_right Singapore

How to do this question? Thanks in advance

Date Posted: 5 months ago
Views: 63

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Eric Nicholas K
Eric Nicholas K's answer
2351 answers (Tutor Details)
I did this question in radian angle form.
Eric Nicholas K
Eric Nicholas K
5 months ago
In radian form, formula for area of sector is 0.5 * radius * radius * theta.

Area of a triangle, given two lengths and the included angle, is 0.5 * length 1 * length 2 * sin theta. In this case, both lengths are radii. The angle used must be in radians for consistency.

This question can be done in degree form as well like Sin Yee does, or using the method that Mei Xuan uses.
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Sin Yee
Sin Yee's answer
271 answers (Tutor Details)