help in this question I'll mark you as a brainliest
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please check this statement
krishna6219:
Jahan pee sec(20-theta )hai vahan pe sec(23-theta)aaigaa
check itt out
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Answer:
Step-by-step explanation:
it will be like this method
Let cos(20-tetha) remain same..
Let us change Sin(70-tetha)
As we know that...
Sin(90-tetha)=Cos tetha
Sin(70-tetha)=Cos[90-(70+tetha)]
=Cos(20+tetha)
Cos(20-tetha) - Cos(20-tetha) = 0
Hence proved...
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