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3 years ago

1. Find the measure of angle GHK

Mathematics

2 answers:

MakcuM [25]3 years ago

7 0

The answer is 137 degrees

antiseptic1488 [7]3 years ago

6 0

180 - 92 + 35 = 53 so angle ghf is 53 degrees
GHK is supplementary so it is
180-53
Or 137 degrees

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Step-by-step explanation:

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$A=\left[\begin{array}{ccc}a&b\\c&d\end{array}\right]$ and $B=\left[\begin{array}{ccc}e&f\\g&h\end{array}\right]$

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$B^{-1}A^{-1}=\frac{1}{(a.e+b.g)(c.f+d.h)-(a.f+b.h)(c.e+d.g)}\left[\begin{array}{ccc}c.f+d.h&-(a.f+b.h)\\-(c.e+d.g)&a.e+b.g\end{array}\right]$

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b) Now, let's prove it for any n x n matrix.

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