Question

Как такое решать: sin30°-cos60°-tg45° объясните пожалуйста:)

Answer 1

Sin30=1/2
cos60=1/2
tg45=1
1/2-1/2-1=-1

Answer 2

Evaluating the Expression sin30° - cos60° - tg45°

To evaluate the expression sin30° - cos60° - tg45°, we need to calculate the values of sine, cosine, and tangent for the given angles and then perform the subtraction.

Let's break it down step by step:

1. Evaluating sin30°: The sine of 30 degrees is equal to 0.5. 2. Evaluating cos60°: The cosine of 60 degrees is equal to 0.5. 3. Evaluating tg45°: The tangent of 45 degrees is equal to 1. Now, let's substitute the values into the expression:

sin30° - cos60° - tg45° = 0.5 - 0.5 - 1

Simplifying further:

0.5 - 0.5 - 1 = -1

Therefore, the value of the expression sin30° - cos60° - tg45° is -1.

I hope this explanation helps! Let me know if you have any further questions.