iii)
sin e + sin 30+ sin 50+ sin 70
cos 0 + cos 30+ cos 50+ cos 70 – tai
fan 4A
Prove that.
Answers
Answered by
3
Answer:
sin 70 + cos 40/cos 70 + sin 40
= sin (90-70) + cos 40 / cos (90-70) + sin 40
=cos 20+ cos 40 / sin 20 + sin 40
= cos 60/sin 60
=1/2 / root 3/2
=1/ root 3
Answered by
8
Answer:
1/ROOT3
HOPE THAT HELPS
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