# mathguy80

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# 30 Questions

 10 Prove that minimum of $\lambda \sin \theta + (1 - \lambda) \cos \theta \le -\dfrac{1}{\sqrt 2}$ 8 Summation of complex numbers 7 Trigonometric equality: $\frac{1 + \sin A - \cos A}{1 + \sin A + \cos A} = \tan \frac{A}{2}$ 5 Why are horizontal transformations of functions reversed? 4 Find angle subtended by overlapping circles [duplicate]

# 541 Reputation

 +5 Why are horizontal transformations of functions reversed? +5 Find angle subtended by overlapping circles +5 How to show $a,b,c \in \mathbb R , z \in \mathbb C , az^2 + bz + c = 0 \iff a\bar{z}^2 + b\bar{z} + c = 0$? +5 Prove that minimum of $\lambda \sin \theta + (1 - \lambda) \cos \theta \le -\dfrac{1}{\sqrt 2}$

 3 Prove that minimum of $\lambda \sin \theta + (1 - \lambda) \cos \theta \le -\dfrac{1}{\sqrt 2}$ 1 Show that locus is straight line 1 Solving graph of trigonometric function and rational function 0 Simple algebra text question, is the equation correct? 0 Bisectors of angles made by intersection of vectors

# 10 Tags

 5 algebra-precalculus × 33 0 geometry 3 trigonometry × 6 0 probability 0 complex-numbers × 6 0 analytic-geometry 0 linear-algebra × 4 0 calculus 0 elementary-set-theory × 2 0 combinatorics

# 3 Accounts

 Mathematics 541 rep 414 Stack Overflow 149 rep 17 Server Fault 101 rep 1