Question

5 tan2 A - 5 sec2 A + 1 is equal to ?? please write the answer step by step.

Answer 1

Answer:

5tan

2

θ−5sec

2

θ

=5(tan

2

θ−sec

2

θ)

We know that

tan

2

A+1=sec

2

A

⇒tan

2

A−sec

2

A=−1

∴5(−1)=−5