Question

3) If y sin45º.cos 45º = tan2(45°)
tan2(45°) – cos2(30°)then y =
a)
c)-2
d) 2
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Answer 1

Answer:

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sorry buddy I am not able to type in message but my ans is 1/2 hope it helps

Answer 2

Step-by-step explanation:

tan²45° -cos²30°= xsin45°.cos45°

we know,

tan45 = 1

cos30° =√3/2

sin45° = 1/√2

cos45°= 1/√2

now,

1 - (√3/2)² = x(1/√2)(1/√2) = x/2

1 -3/4 = x/2

1/4 = x/2

x = 1/2