MAT 202 Useful File, Spring 2011
American University of Science and Technology · Calculus II · 1 page · Ms. Hiba Othman
Stuck on a question? A tutor can walk you through it.
More MAT 202 files
- Useful File Trigonometric Formulas · Fall 2014FileView
- Useful File Notes Trigo · Spring 2019NotesView
- Exam 1 Summary · Fall 2014ExamView
- Final · Fall 2013Final examView
- Exam 2 · Fall 2013ExamView
- Exam 1 With Solution · Fall 2013Exam · with solutionView
- Problems · Spring 2011ProblemsView
- Notes · Fall 2011NotesView
Show the text of this file
Trigonometric Formulas
cos2x + sin2x = 1 cos2x =
tan x
1
1
2
sin2x =
tan x
1
x
tan
2
2
cos(a – b) = cosa.cosb + sina.sinb
cos(a + b) = cosa.cosb – sina.sinb
tan a
1
tan a
1
cos2a
2
cos2a
1
a
sin
2
cos2a
1
a
cos
2sin a
1
cos2a
1
a
2cos
cos2a
sin a
cos a
2a
cos
2
2
2
2
2
2
2
2
sin(a – b) = sina.cosb sinb.cosa
sin(a + b) = sina.cosb + sinb.cosa
tan a
1
2 tan a
2a
sin
2sin .a cosa
2a
sin
2
tan(a – b) =
tan .a tan b
1
tan b
tan a
tan(a + b) =
tan .a tan b
1
tan b
tan a
tan2a =
tan a
1
tan a
2
2
cosa.cosb =
2
1 [cos(a – b) + cos(a + b)] cosp + cosq = 2cos
2
p q
.cos
2
p q
sina.sinb =
2
1 [cos(a – b) cos(a + b)] cosp – cosq = 2sin
2
p q
.sin
2
p q
sina.cosb =
2
1 [sin(a – b) + sin(a + b)]
2
q
.sin p
2
q
sinq 2cosp
sinp
2
q
.cos p
2
q
2sin p
sinq
p
sin
sin3a = 3sina – 4sin3a and cos3a = 4cos3a – 3cosa
tan
)
tan(
sin
)
sin(
cos
)
cos(
,
tan
)
tan(
sin
)
sin(
cos
)
cos(
,
tan
)
tan(
sin
)
sin(
cos
)
cos(
,
cot
)
2
tan(
cos
)
2
sin(
sin
)
2
cos(