Ask a New Question
Search
Asked by
Sandy
find the exact value by using the appropriate half-angle identity:
sin(5pi/12)
Answers
Answers
Answered by
Reiny
Some students can "think" better in degrees than radians, so 5π/12 rd = 75°
sin75 = sin(30+45)
= sin30cos45 + cos30sin45
= (1/2)√2/2 + (√3/2)(√2/2)
= (√2 + √6)/4
Related Questions
Related
Find the exact value sin(7pi/4)
find the exact value of sin^-1 (-1/2) show your work
Find the exact value of tan(x).
Find the exact value of csc theta if cot theta = -2 and the terminal side of theta lies in quadrant...
Find the exact value. tan 45° (1 point) Responses 0 undefined –1 1
Find the exact value of csc θ if cotangent theta equals negative 2 and the terminal side of θ lies i...
I can find the exact value of a logarithmic expression when the argument of the logarithm is a power...