Question

If y sin 45 cos 45=tan^245 - cos^230; then y
=​

Answer 1

Answer:

y=1

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

y=1

y sin 45. cos 45= sin 2(45)- cos2(30)

y×1/ sqrt ×1/sqrt = 1-1/2

y/2= 1/2

y =1