Question

please sara question solve it 1 question mat send karna ​

Answer 1

6)

LHS = tan²Φ + cot²Φ

LHS = sec²Φ – 1 + cosec²Φ – 1

LHS = sec²Φ + cosec²Φ – 2

{ Wrong question RHS me sec²Φ aur cosec²Φ ke beech me plus hona chahiye}

7)

LHS = ( tanA + cotA )²

LHS = tan²A + cot²A + 2tanAcotA

LHS = tan²A + cot²A + 2

LHS = 1 + tan²A + 1 + cot²A

LHS = sec²A + cosec²A

LHS = RHS

Hence Proved

8)

LHS = ( sec²A – 1 ) ( cosec²A – 1 )

LHS = ( 1 + tan²A – 1 ) ( 1 + cot²A – 1 )

LHS = ( tan²A ) ( cot²A )

LHS = 1

LHS = RHS

Hence Proved

Properties Used :

1 + tan²Φ = sec²Φ

1 + cot²Φ = cosec²Φ

tanΦ = 1/cotΦ

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