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Suppose that acostheta = b and csintheta...

Suppose that `acostheta = b` and `csintheta = d`, for `theta` and some constants a, b, c, d. Then which of the following is true?

A

`a^(2)c^(2) = b^(2)c^(2) + a^(2)d^(2)`

B

`a^(2)d^(2) = b^(2)c^(2) + a^(2)c^(2)`

C

`b^(2)c^(2) =a^(2)d^(2) + a^(2)c^(2)`

D

`a^(2)b^(2) = b^(2)c^(2) + c^(2)d^(2)`

Text Solution

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The correct Answer is:
A
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