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secondary 4 | A Maths
8 Answers Below
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Thank you
Date Posted: 5 years ago
Views: 316
Seen, will do them tonight.
Remember that:
Sin x = opp/hyp
Cos x = adj/hyp
Tan x = opp/adj
If:
Sin x = 3/5
You can work out Cos x and Tan x based on Pythagoras Theorem, sketching out a right angle triangle.
Sin x = opp/hyp
Cos x = adj/hyp
Tan x = opp/adj
If:
Sin x = 3/5
You can work out Cos x and Tan x based on Pythagoras Theorem, sketching out a right angle triangle.
But this requires us to know the quadrant position of the angles though.
Eric k later help me out.
Thank you
Thank you
Will do them bit by bit since I am outside.
This topic is hard
This is because the concepts can get mixed up easily, for example main angle and basic angle. It’s ridiculously difficult to explain the concepts on paper (unlike whiteboards in classrooms, in which I would be able to relate everything together).
I need to see more on this topic .
Can help me more on this thanks
Can help me more on this thanks
Ok, will do the rest when I return.
Trigo order of flow is as follows.
1. Sin Cos Tan and Pythagoras
2. Complementary and Supplementary Angle Rules
3. Basic Angles
4. The Quadrants and ASTC
5. Application of Quadrants (like Q11)
Once you master this, you can then go on to more in depth trigo.
1. Sin Cos Tan and Pythagoras
2. Complementary and Supplementary Angle Rules
3. Basic Angles
4. The Quadrants and ASTC
5. Application of Quadrants (like Q11)
Once you master this, you can then go on to more in depth trigo.
6. Secant, Cosecant and Cotangent
7. Basic Trigo Equation Solving involving Quadrants
8. Trigo Graphs
9. Trigo Identities
10. More Advanced Equation Solving (involving identities as well)
11. Double Angle Formula and Addition Angle Formula
12. R Formula
13. Further Equation Solving
7. Basic Trigo Equation Solving involving Quadrants
8. Trigo Graphs
9. Trigo Identities
10. More Advanced Equation Solving (involving identities as well)
11. Double Angle Formula and Addition Angle Formula
12. R Formula
13. Further Equation Solving
6 to 10
Not in a math right?
Not in a math right?
They are, and in fact, are the more important parts in a Maths.
Ok,
Need ur help,
6 month left for o level
Need ur help,
6 month left for o level
Ok.
I waiting for ur help
I waiting for ur help
Ok writing up your answers shortly.
Pls help out the new qns when u free
Thank uou
Thank uou
Hi Kathy, currently having classes. Due to my increased workload, I can only come online daily after I reach home, ranging between 11 pm and 1 am.
Ok. Thank you
See 8 Answers
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This concept is very difficult to explain on paper, so I may not be able to do a good job of explaining this time.
Date Posted:
5 years ago
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Q10a, 10b
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5 years ago
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Q10c to Q11
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5 years ago
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Q13, Q14
Date Posted:
5 years ago
For qns 13 how u know is 12
We use Pythagoras theorem to obtain 12. Some common numbers to know in Pythagoras theorem are 3 4 5, 6 8 10, 5 12 13, 9 12 15, 8 15 17 etc. Now, the horizontal line segment 12 is to the right of the y-axis, hence positive 12.
Not understand
Ok will write up the same question with more details later
Looking at this question again shirtly
Ok.
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Q15, Q16
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5 years ago
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Q17 to Q19
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5 years ago
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Q13, redone.
Date Posted:
5 years ago
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