Question

5sin90°+2cos0°-2sin270°+10cos180°​

Answer 1

Ответ:

-1

Объяснение:

sin90° = 1

cos 0 ° = 1

sin 270°= - 1

cos 180°= - 1

5×1+2×1-2×(-1)+10×(-1) = 5+2+2-10=-1

Answer 2

To calculate the value of the expression, let's break it down and evaluate each term:

1. 5sin90°: The sine of 90° is 1, so 5sin90° = 5(1) = 5.

2. 2cos0°: The cosine of 0° is 1, so 2cos0° = 2(1) = 2.

3. -2sin270°: The sine of 270° is -1, so -2sin270° = -2(-1) = 2.

4. 10cos180°: The cosine of 180° is -1, so 10cos180° = 10(-1) = -10.

Now, let's add up the results:

5 + 2 + 2 - 10 = -1.

Therefore, the value of the expression 5sin90° + 2cos0° - 2sin270° + 10cos180° is -1.