Trigonometrical Ratios and Identities 1 Question 17

17. If $\tan \theta=-\frac{4}{3}$, then $\sin \theta$ is

(a) $-\frac{4}{5}$ but not $\frac{4}{5}$

(b) $-\frac{4}{5}$ or $\frac{4}{5}$

(c) $\frac{4}{5}$ but not $-\frac{4}{5}$

(d) None of the above

Objective Questions II

(One or more than one correct option)

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Answer:

Correct Answer: 17. (c, d)

Solution:

  1. Since, $\tan \theta<0$.

$\therefore$ Angle $\theta$ is either in the second or fourth quadrant.

Then, $\quad \sin \theta>0$ or $<0$

$\therefore \sin \theta$ may be $\frac{4}{5}$ or $-\frac{4}{5}$



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