Question

Sin? 2,5a - sinº 1,50sin 4a -sin a + cos 3a cos 2a​

Answer 1

Ответ:1)sin4a + cosa

2)ну это просто равно 18 сос а

Пошаговое объяснение:

Answer 2

It seems like you're asking for a simplification of the expression:

sin(2.5a) - sin(1.50sin(4a) - sin(a) + cos(3a)cos(2a))

To simplify this expression, let's break it down step by step:

1. Start with the given expression:

   sin(2.5a) - sin(1.50sin(4a) - sin(a) + cos(3a)cos(2a))

2. Apply the trigonometric identity sin(π - x) = sin(x). This means that sin(1.50sin(4a)) is the same as sin(1.50sin(4a - π)):

   sin(2.5a) - sin(1.50sin(4a - π) - sin(a) + cos(3a)cos(2a))

3. Apply the sum-to-product trigonometric identity sin(A) - sin(B) = 2sin((A - B) / 2)cos((A + B) / 2):

   2sin((2.5a - (1.50sin(4a - π) - sin(a) + cos(3a)cos(2a))) / 2)cos((2.5a + (1.50sin(4a - π) - sin(a) + cos(3a)cos(2a))) / 2)

4. Simplify the angles within the trigonometric functions:

   2sin((2.5a - 1.50sin(4a - π) + sin(a) - cos(3a)cos(2a)) / 2)cos((2.5a + 1.50sin(4a - π) - sin(a) + cos(3a)cos(2a)) / 2)

5. Now, simplify the trigonometric expressions further if needed. The final result depends on the specific values of 'a' and any restrictions or specific simplifications you want to apply.

This is the simplified expression for the given trigonometric equation. If you have specific values of 'a' or more details, you can further simplify or evaluate the expression.