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The value of sin^3 10^0+sin^3 50^0-sin^3...

The value of `sin^3 10^0+sin^3 50^0-sin^3 70^0` is equal to (a)`-3/2` (b) `3/4` (c) `-3/4` (d) `-3/8`

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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
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