Triangle

Plane coordinates of vertices: K[11, -10] L[10, 12] M[1, 3] give Triangle KLM.

Calculate its area and its interior angles.

Correct answer:

S =  103.5
K =  34.966 °
L =  47.6026 °
M =  97.4314 °

Step-by-step explanation:

K=angle(KL,KM) K1=arccos(l0 m0l1 m1l m)=arccos((10) 113 (22)16.4012 22.0227)0.6103 K=K1  °=K1 180π   °=0.6103 180π   °=34.966  °=34.966°=34°5758"
L=angle(LK,LM) L1=arccos(k0 m0+k1 m1k m)=arccos((9) 1+(9) (22)12.7279 22.0227)0.8308 L=L1  °=L1 180π   °=0.8308 180π   °=47.603  °=47.6026°=47°369"
M1=arccos(k0 l0+k1 l1k l)=arccos((9) (10)+(9) 1312.7279 16.4012)1.7005 M=M1  °=M1 180π   °=1.7005 180π   °=97.431  °=97.4314°=97°2553"

Try calculation via our triangle calculator.




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Showing 5 comments:
#
Math student
It's Great!. Am grateful.

3 years ago  1 Like
#
Math student
Still don't get it though

#
Math student
I find it hard ... But I think I will get there. ... Slowly but surely ...

#
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I still dont understand

#
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I need one question

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