Question

Evaluate 8/cot^2 theta - 8/cos^2 theta​

Answer 1

Answer:

Step-by-step explanation:

8/cos^2/sin^2  -8/cos^2

8-sin^2/cos^2 -8/cos^2

the denominator r same so,

8-sin^2 -8/cos^2

-8(1-sin^2)/cos^2

as we know the identity cos^2 +sin^2 =1 then 1-sin^2 =cos^2 so

-8(cos^2)/cos^2 here cos^2 are cutted

so answer is -8

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