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Let 2sin^2x+3sinx-2>0a n dx^2-x-2<0(x is...

Let `2sin^2x+3sinx-2>0a n dx^2-x-2<0(x` is measured in radians). Then `x` lies in the interval `(pi/6,(5pi)/6)` (b) `(-1,(5pi)/6)` `(-1,2)` (d) `(pi/6,2)`

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To solve the given inequalities step by step, we will analyze each inequality separately and then find the intersection of their solutions. ### Step 1: Solve the first inequality The first inequality we need to solve is: \[ 2 \sin^2 x + 3 \sin x - 2 > 0 \] #### Step 1.1: Factor the quadratic Let's set \( y = \sin x \). The inequality becomes: ...
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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
  1. The set of values of lambda in R such that sin^2theta+costheta=lambda...

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  2. If in Delta ABC, the distance of the vertices from the orthocenter are...

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  3. Let 2sin^2x+3sinx-2>0a n dx^2-x-2<0(x is measured in radians). Then x ...

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  4. Show that cos^2theta+cos^2(alpha+theta)-2cosalphacostheta"cos"(alpha+t...

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  5. Prove that the distance between the circumcenter and the incenter of ...

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  6. The number of all the possible triplets (a1,a2,a3) such that a1+a2cos(...

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  7. Range of f(theta)=cos^2theta(cos^2theta+1)+2sin^2theta is

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  8. If sinalphacosbeta=-1/2 then find the range of values of cosalphasinbe...

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  9. If 0 lt theta lt pi, then minimum value of3sintheta+cosec^3 theta is

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  10. In A B C , let L ,M ,N be the feet of the altitudes. The prove that s...

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  11. The value of theta lying between theta=0 and theta=pi/2 and satisfying...

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  12. If sin(A-B)=1/(sqrt(10 )), cos(A+B)=2/(sqrt(29)), find the value of ta...

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  13. Prove that the distance between the circumcenter and the orthocentre o...

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  14. One value of theta which satisfies the equation sin^(4)theta-2sin^(2)t...

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  15. If A=sin^(8) theta + cos^(14) theta, then for all values of theta,

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  16. If 3 tan theta tan phi=1, then prove that 2 cos (theta+varphi)=cos (th...

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  17. Minimum value of y=256sin^2x+324cos e c^2x,AAx in R is (a) 432 (b) 5...

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  18. If (cos^2x+1/(cos^2x)) (1+tan^2 2y)(3+sin3z)=4, then x is an integral ...

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  19. A circle is inscribed in a triangle A B C touching the side A B at D s...

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  20. In a triangle ABC, if sinAsin(B-C)=sinCsin(A-B), then prove that cotA...

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