Question

In ΔABC, A (1, 0), B (K, 0), C (0, 2) and m∠B = π/( 2) then, find the value of K.​

Answer 1

Answer:

a computer program that organizes a number of other programs at the same time

कंप्यूटर प्रोग्राम जो साथ ही साथ अन्य प्रोग्रामों को व्यवस्थित करता है; प्रचालन-तंत्र

Step-by-step explanation:

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Answer 2

Given,

Given,The vertices of △ABC are A(1,2,3),B(−1,0,0) and C(0,1,2) then we have to find ∠ABC.

Given,The vertices of △ABC are A(1,2,3),B(−1,0,0) and C(0,1,2) then we have to find ∠ABC.BA→=(1+1)i^+(2−0)j^+(3−0)k^=2i^+2j^+3k^

Given,The vertices of △ABC are A(1,2,3),B(−1,0,0) and C(0,1,2) then we have to find ∠ABC.BA→=(1+1)i^+(2−0)j^+(3−0)k^=2i^+2j^+3k^BC→=(0+1)i^+(1−0)j^+(2−0)k^=i^+j^+2k^

Given,The vertices of △ABC are A(1,2,3),B(−1,0,0) and C(0,1,2) then we have to find ∠ABC.BA→=(1+1)i^+(2−0)j^+(3−0)k^=2i^+2j^+3k^BC→=(0+1)i^+(1−0)j^+(2−0)k^=i^+j^+2k^cosθ=∣BA→∣ ∣BC→∣BA→⋅BC→=4+4+14+4+92+2+6=6