Eric Nicholas K's answer to LockB's Secondary 3 A Maths Singapore question.
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Q9, Q10
There is a certain guideline and technique for solving such questions, in this manner.
1. Do whatever we can to reduce the equation to simple trigo equations of the form sin x = k, cos x = k or tan x = k where k is a number.
2. Call out the basic angle.
3. Identify the quadrants which the said angle can possibly lie in.
4. Evaluate the angles based on the basic angles and the quadrants.
There is a certain guideline and technique for solving such questions, in this manner.
1. Do whatever we can to reduce the equation to simple trigo equations of the form sin x = k, cos x = k or tan x = k where k is a number.
2. Call out the basic angle.
3. Identify the quadrants which the said angle can possibly lie in.
4. Evaluate the angles based on the basic angles and the quadrants.
Date Posted:
3 years ago
how did cot and sec become 1/tanx and 1/cosy tho
Those are definitions by default:
cot x is defined as 1 / (tan x)
Sec x is defined as 1 / (cos x)
cosec x is defined as 1 / (sin x)
cot x is defined as 1 / (tan x)
Sec x is defined as 1 / (cos x)
cosec x is defined as 1 / (sin x)
is there other rules that applies for this topic?
by the way are you free to do 3 questions today?
by the way are you free to do 3 questions today?
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