Questions LLC
Login
or
Sign Up
Ask a New Question
Mathematics
Trigonometry
Trigonometric Functions
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
You can
ask a new question
or
answer this question
.
Related Questions
1. Let (-7, 4) be a point on the terminal side of (theta). Find the exact values of sin(theta), csc(theta), and cot(theta).
2.
Express each of the following in terms of another angle between 0 degrees and 180 degrees
a. sin 50 degrees b. sin 150 degrees c.
Use differentials (or equivalently, a linear approximation) to approximate sin(27 degrees) as follows: Let f(x) = sin(x) and
If sin x = 2/3 and cos y = 3/4, find the exact value of sin ( x + y ).
Find the exact values of x in the interval [0, 4π] that satisfy the equation sin x = -√2 / 2 (refer to y = sin x or y = cos x
Find the exact value of
Sin ( sin-1. 9/41 - cos-1 (-5/13)
How can I find the exact value of Sin 480 degrees? Thanks
Given that sin (pi/10)=(sqrt(5)-1)/4, use double-angle formulas to find an exact expression for sin(pi/5).
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
find the exact value of [sec(-30 degrees)- cot 120 degrees]/1-cosec^2(45 degrees)
Find the exact value of [sin^2(355 degrees) +