7.) Solve. Use the calculator set for degrees. Round answers to 4 decimal places.

Find sin 45° using 15° and 30°

a.) 0.9659

b.) 0.8660

c.) 0.4830

d.) 0.2241

e.) 0.7071

Question

America Black

Mathematics

Today, 09:31

7.) Solve. Use the calculator set for degrees. Round answers to 4 decimal places.

Find sin 45° using 15° and 30°

a.) 0.9659

b.) 0.8660

c.) 0.4830

d.) 0.2241

e.) 0.7071

+2

Answers (1)

Know the Answer?

Roy Lin · Answer 1

The answer to your question is sin 45° = 0.6494

Step-by-step explanation:

Data

sin 45° = ?

Process

Formula

sin (15 + 30) = sin (15) cos (30) + cos (15) sin (30)

sin 15 = 0.2334

sin 30 = 0.4540

cos 15 = 0.9723

cos 30 = 0.8910

Substitution

sin (15 + 30) = (0.2334) (0.8910) + (0.9723) (0.4540)

= 0.2080 + 0.4414

= 0.6494

None of the options

7.) Solve. Use the calculator set for degrees. Round answers to 4 decimal places.Find sin 45° using 15° and 30°a.) 0.9659b.) 0.8660c.) 0.4830d.) 0.2241e.) 0.7071

7.) Solve. Use the calculator set for degrees. Round answers to 4 decimal places.

Find sin 45° using 15° and 30°

a.) 0.9659

b.) 0.8660

c.) 0.4830

d.) 0.2241

e.) 0.7071