The figure shows a weather balloon at point P. A right triangle PQR is drawn with right angle at angle PRQ. Angle PQR is 35 degrees and QR is 6 miles in length. How high is the point P of the weather balloon from a point R on the ground?
@Hero
@amistre64
@ash2326 @Zarkon @thomaster
please help
@ash2326
You can begin by starting with what you know. We can definitely begin with \[\tan \theta = \frac{\text{opp}}{\text{adj}}\] Since the legs of the triangle, sides RQ and RP are the sides of interest.
right
The given angle is 35 degrees the given adjacent side is 6 the opposite side is unknown, or \(x\) So that yields: \[\tan(35^{\circ}) = \frac{x}{6}\] Solving for \(x\) yields \[6\tan(35^{\circ}) = x\] Do you know what \(6\tan(35^{\circ})\) is equivalent to?
i got 4.20124522926
Right, but we want the equivalent answer choice.
Remember, \(\tan(\theta) = \dfrac{1}{\cot(\theta)}\)
so the answer is c?
@Hero c?
@Hero
@Hero @Hero @Hero
It's not c, sorry. Since you have your calculator, another option for you would be to calculate each of the given options and see which one gets you same value as 4.20124522926
b?
@Hero @Hero @Hero
Yes, correct.
yay! thank you
The key thing to remember is \[\tan(\theta) = \dfrac{1}{\cot(\theta)}\]
could you please help me with another question? @Hero
Join our real-time social learning platform and learn together with your friends!