prove that (tan +2)(2 tan+1)=5tan+2sec^2
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Answer:
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Answer:
5 tan +2sec^2
Step-by-step explanation:
start from right hand side
(tan+2)(2tan+1)
=> 2tan^2 + 4tan + tan +2
=> 5 tan + 2 + 2tan^2
=> 5tan + 2( 1+tan^2)
=> 5 tan + sec^2 ........(Left hand side)
Hence Proved
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