The value of cos theta × cos theta =
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cos theta × cos theta = cos ²∅ theta doesnt multiply
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cos¤×cos¤=cos²¤
therefore there is one identity is present
sin²¤+cos²¤=1
=>cos²¤=1-sin²¤
if u want u can use this value instead of cos²¤
...
thatsolve
...
thank you
therefore there is one identity is present
sin²¤+cos²¤=1
=>cos²¤=1-sin²¤
if u want u can use this value instead of cos²¤
...
thatsolve
...
thank you
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