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If sinA =20/29 and cosA = …

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If sinA =20/29 and cosA = 21/29 Find sinA^2 + cosA^2 And cosA^2 - sinA^2

Posted by Rajasthani Funny Dialogue And Dance Video 5 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Aadya Singh ? 5 years, 11 months ago

Sin^2 + Cos^2 => (20/29)^2 + (21/29)^2 => 400/841 + 441/841 => 841/841 => 1.
Cos^2 - sin^2 => (21/29)^2 - (20/29)^2 => 441/841 - 400/841 => 41/841..

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