Evaluate:
sin^2 63° + sin^2 27°/
cos^2 17° + cos^2 73°
Attachments:
Answers
Answered by
4
Step-by-step explanation:
(sin²63° + sin²27°)/cos²17° + cos²73
{sin²63+sin²(90-63)}/cos²(90-73)+cos²73
(sin²63+cos²63)/sin²73+cos²73
1/1
1
#666
Answered by
8
sin² 63° + sin² 27° / cos² 17° + cos² 73°
sin ² (90 - 27) + sin² 27° / cos² (90 - 73) + cos ² 73°
cos² 27° + sin² 27° / sin² 73° + cos ² 73°
1/1
= 1
Thus ,
sin² 63° + sin² 27° / sin² 17° + cos² 73° = 1
Similar questions