Question 69

For $$0^\circ \leq \theta \leq 90^\circ$$, what is $$\theta$$, when $$\sqrt3 \cos \theta + \sin \theta = 1$$ ?

Solution

In this question we will go through option,

$$\sqrt3 \cos \theta + \sin \theta = 1$$

$$\sqrt{\ 3}\cos\ 90^{\circ\ }+\sin\ 90^{\circ\ }=1$$

$$\sqrt{\ 3}\times\ 0+1=1$$

$$1=1$$


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