Question

Cos43*sin73+cos227*sin197

Answer 1

Cos43° Sin(90° - 17°) + Cos(270° - 43°)Sin(180° +17°)=
=Cos43° Cos17° + Sin43° Sin17° = Cos(43° -17°) = Cos26°

Answer 2

To evaluate the expression "cos(43) * sin(73) + cos(227) * sin(197)", we can break it down into smaller steps.

Step 1: Evaluate the trigonometric functions First, we need to calculate the values of the trigonometric functions involved in the expression. Here are the values:

cos(43) ≈ 0.7314 sin(73) ≈ 0.9489 cos(227) ≈ -0.5000 sin(197) ≈ -0.8733

Step 2: Multiply the corresponding values Next, we multiply each pair of corresponding values:

cos(43) * sin(73) ≈ 0.7314 * 0.9489 ≈ 0.6936 cos(227) * sin(197) ≈ -0.5000 * (-0.8733) ≈ 0.4366

Step 3: Add the results Finally, we add the results from step 2:

0.6936 + 0.4366 ≈ 1.1302

Therefore, the result of the expression "cos(43) * sin(73) + cos(227) * sin(197)" is approximately 1.1302.