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liraira [26]
3 years ago
9

TanA/secA-1-sinA/1+cosA =2 cotA​

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
5 0
I don’t not know what this I’m only in the 5th gradensns
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Estimate the height of a tree using the following measurements:height of the rod:180 cm,length of the shadow of the rod is 116 c
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Answer:

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The triangles formed by a rod and its shadow and a tree and its shadow are similar triangles, so the ratios of their heights to the lengths of their shadows are equal.

Let x be the height of the tree. Setting the ratios equal, we get:

180/116 = x/840

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