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If 90^(@) < theta < 180^(@) and sin thet...

If `90^(@) < theta < 180^(@)` and `sin theta = 20/29`, then `cos theta` = ?

A

`29/20`

B

`20/21`

C

`-21/29`

D

`-29/21`

Text Solution

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The correct Answer is:
C
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