Sin A+ Cos A=0Then Find APlease give the solution
Sin A+ Cos A=0
Then Find A
Please give the solution
Shrey , 11 Years ago
Grade 11
Trigonometry> Sin A+ Cos A=0 Then Find A Please give th...
1 Answers
surya
Last Activity: 11 Years ago
sina+cosa=0
-->sina= -cosa
-->squaring on both sides
-->sin(sq)a=cos(sq)a
-->1-cos(sq)a=cos(sq)a
-->1=2cos(sq)a
-->cos(sq)a=1/2
-->cosA=1/v 2
-->A=45 or 135
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