MM
Mashaal Masha
Dec 18, 2022
Choose the correct options for the following questions.
If $\theta$ is an angle in quadrant III and $\tan(\theta-30^{\circ})=\cot 30^{\circ}, then $\theta$=
Difficulty: Easy
A:
$60^{\circ}$
B:
$240^{\circ}$
C:
$270^{\circ}$
D:
$225^{\circ}$
If $\sin\theta=\frac{12}{13}$, and $\sin\theta>0$, then $\tan\theta+$
Difficulty: Easy
A:
$\frac{2}{5}$
B:
$-\frac{12}{13}$
C:
$\frac{13}{5}$
D:
$\frac{12}{5}$
If $90^{\circ}<\alpha<180^{\circ}<\beta<360^{\circ}$, then which of the following cannot be true?
Difficulty: Easy
A:
$\sin\alpha=\cos\beta$
B:
$\sin\alpha=\sin\beta$
C:
$\tan\alpha=\sin\beta$
D:
$\sec\alpha=\csc\beta$
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