Trig equation problem

[panamarojo1989]

[FONT=&quot][FONT=Times New Roman, Times, serif]Hey guys, I'm currently on trig equations using identities. I'm stuck on this following questions, hope someone could help out.[/FONT]

[FONT=Times New Roman, Times, serif]Rewrite [/FONT]−3sin(x)−4cos(x)-3sin(x)-4cos(x) as Asin(x+ϕ). I have to find the value of A and the value of ϕ


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[Deleted member 4993]

Hey guys, I'm currently on trig equations using identities. I'm stuck on this following questions, hope someone could help out.

Rewrite −3sin(x)−4cos(x)-3sin(x)-4cos(x) as Asin(x+ϕ). I have to find the value of A and the value of ϕ

Hint:

If A*cos(Θ) + B * sin(Θ) = R * sin(Θ+Ω), then

sin(Ω) = A/√(A² + B²)

 

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