Question

2tan 45 + cos 45 -sin 45° = ?​

Answer 1

2tan 45 + cos 45 -sin 45°

We know that cos 45 and sin 45° have equal value.. that is 1/root2.

Hence they both cancel out from equation.

Value of tan 45 = 1

2tan 45 = 2 x 1 = 2

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Answer 2

Answer:

40 cm²

40 cm²Step-by-step explanation:

40 cm²Step-by-step explanation:We know that perimeter of a rectangle (box) is 2(l+b)

40 cm²Step-by-step explanation:We know that perimeter of a rectangle (box) is 2(l+b)Length of the box = 8cm

40 cm²Step-by-step explanation:We know that perimeter of a rectangle (box) is 2(l+b)Length of the box = 8cmBreadth of the box = 12cm