sin 25° sin 65º = cos 25º. cos 65
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Step-by-step explanation:
sin25⁰/cos25⁰=cos65⁰/sin65⁰
Tan25⁰=cot65⁰
Tan25⁰Tan65⁰=1
Tan25⁰Tan(90-25)=1
Tan25⁰Cot25⁰=1
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