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Nataliya [291]
3 years ago
6

Verify seca(1-sina)(seca+tana)=1

Mathematics
2 answers:
Daniel [21]3 years ago
7 0
That is an interesting question
Here is how to reach it....

Refer to the pic I attached
.

I hope that helps!






beks73 [17]3 years ago
5 0
Seca(1-sina)(seca+tana)=1
Left hand side
=(1-sina) (seca +tana) / cosa
=seca +tana - sinaseca - sinatan / cosa
=seca + tana -tana -(sin^2a/cosa) / cosa
=(1/cosa - sin^2a/cosa) / cosa
= (1-sin^2a / cosa) / cosa
= (1-sin^2a)/ (cos^2a)
=1 (verified)
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Assuming this is not intended to be describing a function named x with an argument of yz+12, the variables in any expression are assumed to be independent of each other, unless additional information is provided showing their dependencies.

Here, there is no such additional information, so we must assume ...

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<em>Additional comment</em>

The assumption stated in the answer is intended to ensure we're not concerned with something of the form ...

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