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cos^(-1)x = tan^(-1)x, then: a. x^2=((...

`cos^(-1)x = tan^(-1)x`, then:
a. `x^2=((sqrt(5)-1)/2)` b. `x^2=((sqrt(5)+1)/2)`
c. `sin(cos^(-1)x)=((sqrt(5)-1)/2)` d. `tan(cos^(-1)x)=((sqrt(5)-1)/2)`

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ALLEN -INVERSE TRIGONOMETRIC FUNCTIONS-All Questions
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  2. The solution of the inequality (tan^(-1)x)^2-3tan^(-1)x+2geq0 is a.(...

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  8. Which of the following pairs of function/functions has same graph? y=...

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  9. The solution set of equation sin^(-1) sqrt(1-x^2) + cos^(-1) x = cot^(...

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  20. Prove that: tan^-1(1/4)+tan^-1(2/9)=1/2 cos^-1(3/5).

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