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The equation 3^("sin"2x + 2"cos"^(2)x) +...

The equation `3^("sin"2x + 2"cos"^(2)x) + 3^(1-"sin"2x +2"sin"^(2)x) = 28` is satisfied for the values of x given by

A

`"cos" x = 0, "tan" x = -1`

B

`"tan" x = -1, "cos"x =1`

C

`"tan" x =1, "cos" x =0`

D

none of these

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The correct Answer is:
A
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OBJECTIVE RD SHARMA-TRIGONOMETRIC EQUATIONS AND INEQUATIONS-Chapter Test
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  2. If x = X "cos" theta-Y "sin" theta, y = X "sin" theta + Y "cos" theta ...

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  3. The equation 3^("sin"2x + 2"cos"^(2)x) + 3^(1-"sin"2x +2"sin"^(2)x) = ...

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  11. Find the minimum value of 2^("sin" x) + 2^("cos" x)

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  12. From the identity "sin" 3x = 3 "sin"x - 4"sin"^(3)x it follows that if...

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  13. Find the most general solution of 2^1|cosx|+cos^2x+|cosx|^(3+oo)=4

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  14. Let alpha, beta be any two positive values of x for which 2"cos"x, |"c...

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  15. If underset(x in R)("Max") {5 "sin"x + 3 "sin" (x-theta)} =7, "then "t...

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