1.

If `cos 17^(@) + sin 17^(@) = alpha`, then `cos 34^(@)` is equal toA. `alphasqrt(2-alpha^(2))`B. `sqrt(1-alpha^(2))`C. `alphasqrt(1-alpha^(2))`D. `sqrt(2-alpha^(2))`

Answer» Correct Answer - A


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