question_answer

If \[\mathbf{sin }\theta \mathbf{ =}\frac{\mathbf{p}}{\mathbf{q}}\] then \[\mathbf{cos}\theta \]equals to _________

A)  \[\mathbf{ }\sqrt{{{q}^{2}}-{{p}^{2}}}\mathbf{ }\]                                      

B)  \[\frac{\sqrt{{{q}^{2}}-{{p}^{2}}}}{q}\]

C) \[\sqrt{{{p}^{2}}-{{q}^{2}}}\]                      

D)  \[\frac{\sqrt{{{p}^{2}}+{{q}^{2}}}}{q}\]

E)  None of these