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3 years ago

Prove:sin²A-cos²B=sin²B-cos²A

Mathematics

2 answers:

faltersainse [42]3 years ago

8 0

Step-by-step explanation:

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Maurinko [17]3 years ago

8 0

Answer:

Solution given:

L.H.S

sin²A-cos²B

sin²A=1-cos²A and Cos²B=1-sin²B

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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Prove:sin²A-cos²B=sin²B-cos²A ​

Prove:sin²A-cos²B=sin²B-cos²A