What is the value of cos 0° . sin 25° . sec 85° . tan 45° . cosec 5° . cos 65° . sin 90°?….

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  • 05/10/2019 at 6:53 am #800398 Reply
     EduGorilla 
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    What is the value of cos 0° . sin 25° . sec 85° . tan 45° . cosec 5° . cos 65° . sin 90°?

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    1. 0
    2. sin2 25° . sec2 85°
    3. 1
    4. sin2 25° . cos2 85°
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