If $2 \sin^{2} \theta - \cos^{2} \theta = 2$,then find the value of $\theta$. (in $^{\circ}$)

  • A
    $30$
  • B
    $90$
  • C
    $0$
  • D
    $120$

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Which of the following groups truly matches the data of Part $I$ with the data of Part $II$?
Part $I$ Part $II$
$1.$ $\cos(90^\circ - \theta)$ $a.$ $\sec \theta$
$2.$ $\cot(90^\circ - \theta)$ $b.$ $\sin \theta$
$3.$ $\operatorname{cosec}(90^\circ - \theta)$ $c.$ $1$
$d.$ $\tan \theta$

Given that $\sin \alpha = \frac{1}{2}$ and $\cos \beta = \frac{1}{2}$,then the value of $(\alpha + \beta)$ is (in $^{\circ}$)

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