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Evaluate : Sin² 63° + Sin² …

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Evaluate : Sin² 63° + Sin² 27° ____________________ Cos ²17° + cos 73°

Posted by Tanishk Sharma 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Kajal Sikarwar 5 years, 3 months ago

(1 answer

1Thank You

Yogita Ingle 5 years, 3 months ago

( sin ² 63° + sin ² 27° ) / ( cos ² 17° + cos ² 73° )
= { sin ² 63° + sin ² ( 90 - 63 ) ° } / { cos ² 17° + cos ² ( 90 - 17 ) ° }
= ( sin ² 63° + cos ² 63° ) / ( sin ² 17° + cos ² 17° )
= 1 / 1
= 1

1Thank You

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