solve cos²45 -sin²45
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Cos 45==1/√2
sin 45== 1/√2
cos²45 - sin ²45
( 1/√2 )² - (1/√2) ²
1/2 - 1/2
0
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Answered by
3
Answer:
cos squre 45 - sin square 45
=1/2-1/2
=0
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