Question

1) sin²63+sin²27/cos²17+cos²73
2) sin 25*cos 65+ cos 25*sin65​

Answer 1

Step-by-step explanation:

sin²63+sin²27/cos²17+cos²73

sin2 (90-27)+ sin2 27/ cos2(90-73)+ cos2 73

cos2 27+ sin2 27/ sin2 73+ cos2 73

= 1/1 or 1

2. sin 25*cos 65+ cos 25*sin65

0.8939966636

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