How do you find the exact value of sin 105 degrees?

Francisco Proctor 2022-07-22 Answered
How do you find the exact value of sin 105 degrees?
You can still ask an expert for help

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

Solve your problem for the price of one coffee

  • Available 24/7
  • Math expert for every subject
  • Pay only if we can solve it
Ask Question

Answers (2)

Clarissa Adkins
Answered 2022-07-23 Author has 16 answers
Use sin 105 = sin ( 60 + 45 ) = sin 60 cos 45 + cos 60 sin 45
= ( 3 2 ) ( 1 2 ) + ( 1 2 ) ( 1 2 ) = 2 4 ( ( 3 + 1 ) = 0.9656 nearly.
Explanation:
sin 45 , cos 45 and sin 60 are irrational.
Not exactly what you’re looking for?
Ask My Question
Talon Mcbride
Answered 2022-07-24 Author has 2 answers
We know sin ( A + B ) = sin A cos B + cos A sin B
Hence sin 105
= sin ( 60 + 45 )
= sin 60 cos 45 + cos 60 sin 45
= 3 2 × 1 2 + 1 2 × 1 2
= 3 + 1 2 2 × 2 2
= 6 + 2 4
Not exactly what you’re looking for?
Ask My Question

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

You might be interested in

asked 2021-01-31

Let XN(6,4).Find the probabilities P(X<3).

asked 2022-05-22
How do you determine the highest level of significance (in decimal form) at which the null hypothesis will not be rejected?
Let's say for instance I got a p-value of 0.001 and a test statistic of 3.273, then is 0.0005 the highest level of level of significance at which H 0 will not be rejected?
asked 2022-04-12
The students in an Introductory Statistics class are asked to complete a survey about study habits.
(a) does the study appear to use random sampling?
yes or no
(b) does the study appear to use random assignment?
yes or no
asked 2022-06-02
Which of the following is not a risk management process?
A. Perform Actuarial Risk Analysis.
B. Perform Qualitative Risk Analysis.
C. Perform Quantitative Risk Analysis.
D. Implement Risk Responses.
asked 2021-10-23
Your friend brags about his ability to do pull-ups. To demonstrate his skills, he has calculated the average number of pull-ups he can do. He wants to know if this significantly exceed the average pull-ups men in the United States can do. The average pull-ups for men in the United States is 8 reps.
A). z-test or t-test, and why?
B). What are the H1 and H0?
asked 2021-10-11
A of 100 12oz ketchup bottles was taken.
1. If μ=12.02andσ=0.01. With what confidence can we claim that 12.02 oz is within 0.001 of the true mu amount of ketchup in a bottle?
2. If bottles yielded σ=0.1oz., what is the 99% confidence interval for the standard deviation of the amount of ketchup in a bottle?
asked 2022-03-16
A sample of n = 100 people is classified into four categories. If the results are evaluated with a chi-square test for goodness of fit, what is the df value for the chi-square statistic?

New questions