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The values of sintheta(1), cos^(2)theta(...

The values of `sintheta_(1), cos^(2)theta_(2)` and `tan theta_(3)` are given as `0.5, -0.5` and `3` (not in order), for some angles `theta_(1), theta_(2)` and `theta_(3)`. Choose incorrect statement.

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The correct Answer is:
A
Here angle is very small so diameter `~~` arc
`theta=42'=(42xx1/60)^(0)=42xx1/60xxpi/180=(7pi)/1800 rad`
Diameter `=Rtheta=360000xx7/1800xx22/7=4400 km`
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