Question

prove that cos1.cos2.cos3..............cos180=0

Answer 1

To prove : - cos1°.cos2°.cos3°........cos180° = 0

Now,

cos1°.cos2°.cos3°.......cos90°......cos180°

= cos1°.cos2°.cos3°.....0.......cos180° [Because cos90° = 0]

= 0

Hence, proved

Answer 2

$\huge\color{lightblue}\boxed{\mathbb{A}nswer:}$







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$\huge\boxed{\mathbb{TRIGONOMETRY}}$






$\huge\bf\underline{\mathbb{LHS = RHS}}$






Hence, it is proved✔✔✅✅






$\huge\color{purple}\boxed{\mathbb{\ulcorner THANKS \urcorner}}$