Use a calculator to find the given value. Round to four decimal places.
sin 21
A. 0.3584
B. 2.7904
C. 0.9336
D. 0.3839
I don't know how to do this...
Hey, Anonymous here.
The answer is A. 0.3584.
Source: Handy Dandy Calculator
Hope this helps :D
wait I got it!! its A im sure lol
oh thank u very much lol just figured it out myself haha XD but at least u agree
Nice to help!!! Have a great day!!
Anonymous :D
To find the value of sin 21 using a calculator, you will follow these steps:
1. Make sure your calculator is set to the degree mode. Most calculators have a degree (°) and a radian (rad) mode. For trigonometric functions, we usually work with degrees.
2. Enter the number 21 on your calculator.
3. Press the sin button on your calculator. It is usually labeled as "sin" or "sin^-1".
4. The calculator will display the value of sin 21, which should be a decimal number.
If you do not have a calculator or cannot access one, you can use an online calculator or a trigonometric table to find the value of sin 21.
Now, let's calculate sin 21 using a calculator:
1. Set your calculator to degree mode.
2. Enter the number 21.
3. Press the sin button.
After performing these steps using a calculator, you should obtain the value of sin 21. Now, let's go through the answer choices provided:
A. 0.3584: This value could be a possible result of sin 21. However, we will need to verify it.
B. 2.7904: This value is not possible for the sine function, as it should always be between -1 and 1.
C. 0.9336: This value could be a possible result of sin 21. However, we need to verify it.
D. 0.3839: This value could be a possible result of sin 21. However, we need to verify it.
Now that we have calculated the value of sin 21, we can compare it to the answer choices given.
Rounding the value of sin 21 to four decimal places, we find that sin 21 is approximately 0.3584. Therefore, the correct answer is A. 0.3584.