13sin46.9 - 8cos34.1/cos19

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вопрос

To calculate this expression, we first need to evaluate sin(46.9), cos(34.1), and cos(19).

sin(46.9) ≈ 0.7290
cos(34.1) ≈ 0.8290
cos(19) ≈ 0.9455

Now we substitute these values into the expression:

(13 0.7290 - 8 0.8290) / 0.9455

Calculating the numerator first:

(9.477 - 6.632) / 0.9455

Now subtract the numerator:

2.845 / 0.9455 ≈ 3.009

Therefore, the result of the expression is approximately 3.009.