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secondary 4 | A Maths
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need help with this qns. thanks in advv
Date Posted: 5 years ago
Views: 289
U seriously and literally need help at this stage if u cannot answer this question. Please whatapp me at 81770278 if u need my help.
4 sin x - 2 cos x - 1 = 0
4 sin x - 2 cos x = 1
From here you can use the R sin (x-θ) to find R and θ. After which sub in the R and θ into the expression below:
R sin (x-θ) = 1
sin (x-θ) = 1/R
Then solve it normally.
4 sin x - 2 cos x = 1
From here you can use the R sin (x-θ) to find R and θ. After which sub in the R and θ into the expression below:
R sin (x-θ) = 1
sin (x-θ) = 1/R
Then solve it normally.
thank you!!
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