Find all the triangles satisfying $\cos(A)\cos(B)+\sin(A)\sin(B)\sin(C)=1$
43605
If $\sin(a)\sin(b)\sin(c)+\cos(a)\cos(b)=1$ then find the value of $\sin(c)$
108245
Solving the complex equation $\sin(z) = \cos(z)$
157660
proof $a$ ,$b$ and $c$ can be sides of a triangle
29604
How to solve $\sin x +\cos x = 1$?
94831
Finding value of $a +b+c$
57330
Find the number of solutions of $\sin x+2 \sin 2x- \sin 3x=3$
123867
Solve $(a + b\sin(x))\sin(x) = p$ for $x$
99335
Sum of all triangle numbers
103555
Find all positive integral soludions of $\frac{a}{b+c} + \frac{b}{a+c} + \frac{c}{a+b} = 4$
83359
Complex number identity by trigonometry
145463
How to factorise $2 \sin^2θ – 3\sinθ +1 = 0$
45702
For any triangle with sides $a$, $b$, $c$, show that $a^2b(a-b)+b^2c(b-c)+c^2a(c-a)\ge 0$
14410
If $(1+ \cos A) (1+ \cos B) (1+\cos C)= y = (1- \cos A) (1-\cos B) (1-\cos C)$ then $y = \pm \sin A \sin B \sin C$
5642
Geometry with Trigonometry
89319
How can I find all the solutions of $\sin^5x+\cos^3x=1$
116205
System of equations in a,b,c,d
68090
Can we find incentre of a triangle by using equation of lines?