Question

Cos33°⋅cos7°−sin33°⋅sin7°

Answer 1

cos(x) • cos(y) - sin(x) • sin (y) = cos (x+y)

cos (33°+7°) = cos (40°) = -0.67

Answer 2

Ответ: cos(33+7) = cos40

Пошаговое объяснение:

вот формулы, пользуйся

Answer 3

To simplify the expression cos(33°)⋅cos(7°)−sin(33°)⋅sin(7°), you can use the trigonometric identity for the difference of angles:

cos(A - B) = cos(A)⋅cos(B) + sin(A)⋅sin(B)

So, the expression can be rewritten as:

cos(33° - 7°)

Now, you can calculate the value of cos(33° - 7°):

cos(33° - 7°) = cos(26°)

As a result, the simplified expression is cos(26°).