1. If tan θ = 3, then what is the value of
5sin 3cos
4sin 3cos
θ θ
θ θ
⎛ ⎞ − ⎜ ⎟ ⎝ ⎠ +
?
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tan=sin/cos
5=5sin/3cos
5×3cos=5sin
15cos=5sin
3cos=sin
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