How does one solve trig functions by hand?
60256
Is there a way to get trig functions without a calculator?
40869
Solving Trigonometric Limits
112027
How do you find the self-intersection points of a single parametric trigonometric function?
105119
Are there any other methods to apply to solving simultaneous equations?
147113
How to solve $2 \tan x / (1 - (\tan x)^2) = (\sin 2x)^2$?
64255
Trigonometry problem
84420
When is $\sin(x) = \cos(x)$?
76058
How can you number equations manually?
95979
Trigonometry and algebra question
58483
Determining the general solution for the trigonometric equation $ 5\cos(x)-12\sin (x) = 13 $
66304
How to evaluate these integrals by hand
110226
How can I find the square root using pen and paper?
34049
How can I understand and prove the "sum and difference formulas" in trigonometry?
61591
Solve simple trig equation
142610
Solving $\sin x\cos3x+\cos x\sin3x=\sqrt{3}/2$ in the interval $[0,2\pi]$
146579
What is the right first step to take when integrating $1/(2+ \sin x + \cos x)$?
67988
Trigonometric curiosity