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Alina [70]
3 years ago
5

Prove:sin²A-cos²B=sin²B-cos²A ​

Mathematics
2 answers:
faltersainse [42]3 years ago
8 0

Step-by-step explanation:

thwashm m GB DC GM 3hka it g feeds ygzdkzyzuzjz indin, mi, hn zbe

Maurinko [17]3 years ago
8 0

Answer:

Solution given:

L.H.S

sin²A-cos²B

<h3>we have</h3>

sin²A=1-cos²A and Cos²B=1-sin²B

<h3>now</h3>

replacing value

1-cos²A-(1-sin²B)

<h3>open bracket</h3>

1-cos²A-1+sin²B

<h3>keep together like terms</h3>

1-1+sin²B-Cos²A

=sin²B-Cos²A

R.H.S

<h3>proved.</h3><h3 />
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