please answer my question
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Answers
Answer:
Hiii,
so, we can write the formula as
2acos theta /2
-----------------------------------------------------
now, if theta =0 ,than
2acos0/2
=2acos 0°
=2a
because cos0°=1
-------------------------------------------------------------
if theta =60°
2acos60/2
=2acos30°
=2a×√3/2
=√3a
---------------------------------------------------------------
if theta=90°
2acos90/2
=2acos45°
=2a×1/√2
=√2a
-----------------------------------------------------------------
if theta=120
2acos120/2
=2acos60°
=2a×1/2
=a.
------------------------------------------------------------------
if theta= 180
=2acos180/2
=2acos90°
= 0
because cos90°= 0& if we multiply any number by 0 than the result will be 0
#hope it will help you
#mark me brainliest
Answer:
option no C is right answer .......
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