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Distance between two point (8, -4) and (...

Distance between two point `(8, -4)` and `(0, a)` is `10`. All the values are in the same unit of length. Find the positive value of a.

A

The value of `tan theta_(3)` could be `-0.5`

B

The value of `sintheta_(1)` can not be `3`.

C

The value of `cos^(2)theta_(2)` can't be `-0.5`

D

The value of `cos^(2)theta_(2)` could be `3`.

Text Solution

Verified by Experts

The correct Answer is:
D
`-1 le sin theta_(1) le 1, 0 le cos^(2) theta_(2) le 1, -oo lt tan theta_(3) lt oo`
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