Math, asked by lakhveerkaurkaur1234, 10 months ago

evaluate sin18/cos72​

Answers

Answered by sadhanroydot542
8

Answer:

0.850...

Step-by-step explanation:

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Answered by Anonymous
2

 \huge \fbox \colorbox {olive}{Answer}

 \huge {\frac{sin18°}{cos72°}}

 \huge {\rightarrow \frac {sin( 90° - 72° )}{cos72°}}

 \huge {\rightarrow \frac {cos72°}{cos72°} = 1}

 \huge {[sin( 90° - A ) = cosA]}

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