loser123456789
help @valentinekid
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loser123456789
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39
loser123456789
0A slide 4.1 meters long makes an angle of 35° with the ground. To the nearest tenth of a meter, how far above the ground is the top of the slide?
valentinekid
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So which Trig function should we use? Remember
Sin=opposite/hypotenuse
cos=adjacent/hypotenuse
tan=opposite/adjacent
loser123456789
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cos?
valentinekid
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well x is opposite our angle and we know the hypotenuse...
loser123456789
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sin
valentinekid
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Exactly. Any guess as to how to setup the problem from there? sin(angle)=opp/hyp
loser123456789
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sin(35)=x/4.1
valentinekid
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BOOM! You got this! haha now just isolate x by multiplying both sides by what?
loser123456789
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x/1
valentinekid
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Let's multiply both sides by 4.1 and see what happens.
loser123456789
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4.1*sin(35)=x
valentinekid
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That's all there is to it. Trig isn't so bad, is it? ;)
loser123456789
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is that the final answer or is there more simplifying
valentinekid
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That's it. Remember though if you're asked to give an actual number instead of 4.1*cos(35) plug it in to your calculator.
loser123456789
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thank you so much
valentinekid
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Yeah, no worries! Best of luck. :)