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Find the set of values of lambda in R su...

Find the set of values of `lambda in R` such that `tan^(2) theta + sec theta = lambda` holds for some `theta` .
a. `(-oo, 1]`
b. `(-oo, -1]`
c. `phi`
d. `[1, oo)`

A

`(-oo, 1]`

B

`(-oo, -1]`

C

`phi`

D

`[1, oo)`

Text Solution

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The correct Answer is:
D
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