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Here’s part 2 of solving trigonometric equations.
In example 1 below, the tip is to convert to one single trigonometric function – tan x.
For example 2, students are required to find two more solutions by going one more round (add 360) as they still fit in the range.
In our last example, we make use of double angle formula sin2A = 2sinAcosA to convert to one single trigonometric function.
Many students struggle in Amath trigonometry. In this short post, we have 3 simple examples where we solve basic trigonometric equations.
I hope that you learnt how to solve trigonometric equations better after this short lesson. Do look out for part 2!
You may also sign up with our Amath group classes to understand trigonometry topic better with Ms Chua.
Mastering factorisation is important in O level Amath. There are 4 methods of factorisation as follows:
Lets take a look at some examples below.
Many students struggle to understand the concept of completing the square. It helps us to solve quadratic equations and allow us to find the turning point of quadratic functions. Hence, completing the square is a useful and important technique to learn in Emath. Students taking Amath are also required to know this technique.
Below we see the steps to complete the square.
lets take a look at 2 examples.
Many students face problems when finding independent term for binomial theorem. In this post, we explore 2 examples to solve them.
Have you mastered the technique for finding independent term? Join Ms Chua’s small group Amath class to learn more tips and questions on Binomial Theorem.
in this post, we take a look at 2 depreciation methods learnt in O and N level POA. They are namely straight line method and reducing balance method.
Which depreciation method is more suitable to depreciate the non current assets then? This depends on the pattern of usage of the assets. For example, fixtures and fittings such as tables and chairs provide constant benefits throughout their useful lives. In this case, straight line method is more suitable as equal amount of depreciation is charged every year.
On the other hand, machinery and motor vehicles provide higher benefits in the earlier years, hence reducing balancing method is more appropriate where higher depreciation is charged.