Asked by Ankita
3sin thita = 4 cos thita
4sin square- 3cos+2?
4sin square- 3cos+2?
Answers
Answered by
Steve
theta, not thita
Nice equations -- are you supposed to solve them?
Recall that tanθ = sinθ/cosθ
3sinθ = 4cosθ
tanθ = 4/3
θ = 53.13°
For the second one, is that your attempt to solve the first line? If not,
Recall that sin^2θ + cos^2θ = 1
4sin^2θ - 3cosθ + 2 (I think - typos mess things up)
No equation here, but if you meant
4sin^2θ - 3cosθ + 2 = 0
4(1-cos^2θ)-3cosθ+2 = 0
4-4cos^2θ - 3cosθ + 2 = 0
4cos^2θ + 3cosθ - 6 = 0
Now it's just a quadratic to solve.
Nice equations -- are you supposed to solve them?
Recall that tanθ = sinθ/cosθ
3sinθ = 4cosθ
tanθ = 4/3
θ = 53.13°
For the second one, is that your attempt to solve the first line? If not,
Recall that sin^2θ + cos^2θ = 1
4sin^2θ - 3cosθ + 2 (I think - typos mess things up)
No equation here, but if you meant
4sin^2θ - 3cosθ + 2 = 0
4(1-cos^2θ)-3cosθ+2 = 0
4-4cos^2θ - 3cosθ + 2 = 0
4cos^2θ + 3cosθ - 6 = 0
Now it's just a quadratic to solve.
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