Question

(1 + tan^2theta) (1 - sin^2theta) = _____​

Answer 1

Answer:

1

Step-by-step explanation:

(1+tan2theta)(1-sin2theta)

=(sec2theta)(cos2theta).....( using the trigonometric property... sin2theta + cos2theta = 1 and 1 + tan2 theta = sec2 theta)

=sec2theta x 1/sec2theta

=1

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Answer 2

Answer:

1

Step-by-step explanation:

using identities

1+ tan^2A = sec^2A

sin^2A +cos^2A=1

now using identites in given

=sec^2A. cos^2A

and secA=1/cosA

=sec^2A.1/sec^2A

=1