You can use the identity
$\sin(x)=\sqrt{\dfrac{\tan(x)^{2}}{1+\tan(x)^{2}}}\\\\=-\sqrt{\dfrac{4^{2}}{1+4^{2}}}\\\\=-\sqrt{\dfrac{16\cdot 17}{17\cdot 17}}=\dfrac{-4\sqrt{17}}{17}$

The sign is negative because the angle is in the 3rd quadrant.

This corresponds to ...
a. -(4√17)/17

4 0

3 years ago

Using Distributive Property, what is the simplified answer to (6+9v)6 ?

inna [77]

36+54v

Multiply 6 with both 6 and 9v

4 0

3 years ago

Read 2 more answers

How to determine if planes are parallel perpendicular or neither?

Levart [38]

If two planes are perpendicular, they intersect. if two planes are parallel, they will never touch. hope this helps

7 0

3 years ago