Question

Sin3a+sin(-a)/cos(-a)+sin(1,5x+3a)

Answer 1

Это решениииииие-----

Answer 2

To simplify the expression, let's work on each term step by step.

First, we'll simplify the numerator: sin(3a) + sin(-a)

Using the identity sin(-x) = -sin(x), we can rewrite sin(-a) as -sin(a): sin(3a) - sin(a)

Next, we'll simplify the denominator: cos(-a) + sin(1.5x + 3a)

Using the identity cos(-x) = cos(x), we can rewrite cos(-a) as cos(a): cos(a) + sin(1.5x + 3a)

Now, let's put the simplified numerator and denominator together: (sin(3a) - sin(a)) / (cos(a) + sin(1.5x + 3a))

Please note that the expression could be further simplified or evaluated depending on the values of 'a' and 'x', or if any additional information or context is provided.