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Kobotan [32]
3 years ago
14

Help me on this??? Will mark as Brainiest

Mathematics
2 answers:
lara [203]3 years ago
7 0

Answer:

first answer is 7 square root 2, second is 39, third is 5.36487494991.

Step-by-step explanation:

1st answer: its a right triangle with both sides as 45 degrees no shorter legs or longer legs. so both opp and adj legs are equal to 7. 7 times 7 plus 7 times 7 is 98 so square it into radical form and get 7 square root 2. second is 39 because of the 3,4,5. 15 36 and 39 are ratios of the rule. Third is 5.45454545... because make a triangle with a right triangle properties. name the hyp variable A. Find each angle which is 90, 56 ( the top of the triangle where plane is ) and 34 ( at the boat place ). You use Sine with 34 which is (0.55919290347...). This is equal to 3 km over A. Change the form and turn it into A=3 divided by 0.55...) which is 5.36487494991.

Leviafan [203]3 years ago
3 0

Answer:11 and 12 is g and g and answer 13 is 5.36487494991

Step-by-step explanation:

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Mike wants to work out the height of a tree which has a fence around it. From A he sees that the angle of elevation of the top i
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Answer: 13.8 m

Step-by-step explanation:

Given

From point A, angle of elevation is 19^{\circ}

From point B which is 18 m closer, it changes to 32^{\circ}

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\Rightarrow \tan 32=\dfrac{h}{x}\\\\\Rightarrow h=x\tan 32^{\circ}

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\Rightarrow \tan19^{\circ}=\dfrac{h}{x+18}\\\\\Rightarrow h=(x+18)\tan 19^{\circ}\\\text{Substitute the value of h}\\\Rightarrow x\tan 32^{\circ}=x\tan 19^{\circ}+18\tan 19^{\circ}\\\Rightarrow x(\tan32^{\circ}-\tan 19^{\circ})=18\tan 19^{\circ}\\\\\Rightarrow x=\dfrac{18\tan 19^{\circ}}{\tan32^{\circ}-\tan 19^{\circ}}\\\\\Rightarrow x=22.09\approx 22.1\ m

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5 0
3 years ago
PLEASEEEEEEEEEEEEEE HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
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