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If sinx+cos e cx=2, then sin^n x+cos e c...

If `sinx+cos e cx=2,` then `sin^n x+cos e c^n x` is equal to `2` (b) `2^n` (c) `2^(n-1)` (d) `2^(n-2)`

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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
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