Math, asked by pmhatre197540, 25 days ago

the value of experession [2sin theta tan theta(1-tan theta)+2sintheta sec²theta ] / (1+tantheta)² =

Answers

Answered by psamikshya01
1

Step-by-step explanation:

Hope u satisfy with my answer

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Answered by llItzDishantll
6

To Prove:-

( 2 sin Ф tan Ф ( 1 - tan Ф ) + 2 sin Ф sec² Ф ) ÷ ( 1 + tan Ф )² = ( 2 sin Ф )  ÷ ( 1 + tan Ф)

Solution:-

\frac{( 2 sin Ф tan Ф ( 1 - tan Ф ) + 2 sin Ф sec² Ф )}{( 1 + tan Ф )²} =\frac{2 sin Ф}{ 1 + tan Ф}

LHS:-

\frac{2 sin Ф}{(1 + tan)^2} [ tan Ф ( 1 - tan Ф ) + sec² Ф ]

\frac{2Sin}{(1 + tan)^2} [ tan Ф - tan² Ф + sec² Ф ]

→ Using identity sec² Ф - tan² Ф = 1

\frac{2Sin}{(1 + tan)^2} (tan Ф + 1)

\frac{2Sin}{1+tan} = RHS

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