Ask a New Question

find an exact value for sin 15 degrees

1 answer

sin(15) = sin(45-30)
sin(45)cos(30) - cos(45)sin(30)
^ Plug in values

Ask a New Question or answer this question.

Similar Questions

In triangle PQR, angle Q= 90 degrees, angle P= 60 degrees and angle R= 30 degrees. PR= 1 unit. Extend side QR to T such that PR=
1. 1 answer
Can someone check my answers so far?1. Find the exact value of tan(-3ð) Answer: tan(-3ð) = tan (-3 + 2ð) = tan (-ð) = tan
1. 2 answers
1. Find the value of Sin^-1(-1/2)a. -30 degrees b. 30 degrees c. 150 degrees d. 330 degrees 2. Find the exact value of cos(-420
1. 1 answer
Find the exact values of the following.cos 270 degrees = 90 degrees, value = 0. Sin 180 degrees = 180-90 = 90 = 1, but its
1. 1 answer

more similar questions