The picture below shows a portion of a river dam:
Which of the following can be used to calculate the height of the river dam?
115 divided by cos 50 degrees
115 cos 50°
115 tan 50°
115 divided by sin 50 degrees
Stacey Warren - Expert brainly.com
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I just need help working out the question.
Look in the triangle I drew above.
Now look at your problem
Which pieces of info do you know and what are you looking for?
The opposite is what I am looking for.
dayyyum girl u smart
Okay so how do I find it?
You want the opposite. You have the angle and the adjacent.
Which trig function, sine, cosine, or tangent, relate the angle measure to the opposite and the adjacent?
Opposite is cosine
Adjacent is Sine
Look in my drawing above.
First, the cosine does not have the opposite at all.
In addition, you need one ratio that has both adjacent and opposite since we don't know anything about the hypotenuse.
Oh im sorry it is tan because of opp/adj
Now you can rewrite the left side as a fraction over 1 and solve it like a proportion by cross multiplying.