the value of expression (cos²23°-sin²67°) is positive. true /false ....why?
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Answered by
2
Answer:
false .
The value will be zero
Zero neither be positive nor negative
Answered by
1
positive !!!
the a above expression will become
1-2sin²67° after applying basic trignometry formula !!!
now since at sin90 value for sin is maximum that's is one
the value of 67 degree will be smaller than one resulting in positive value regards
the a above expression will become
1-2sin²67° after applying basic trignometry formula !!!
now since at sin90 value for sin is maximum that's is one
the value of 67 degree will be smaller than one resulting in positive value regards
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