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InterviewSolution
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Evaluate :Sin² 63° + Sin² 27°____________________Cos ²17° + cos 73° |
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Answer» (1 answer ( 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 |
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