+91-87964 74404
FlagBACK
Question icon
Grade 10Trigonometry

If tan a= (sin a- cos a) ÷ (sin a + cos a) , then sin a+ cos a=?

Profile image of POOJA JHA
8 Years agoGrade 10
Answers icon

1 Answer

Profile image of Arun
ApprovedApproved Tutor Answer8 Years ago
Dear Pooja
 
tan A = sin - sin(90-A)/ (sinA + sin(90-a))
tan A = 2 cos 45 sin (45 +A)/ 2 sin 45 cos (45+A)
tan A = tan (45 +A)
A = 45 +A
This is never true.
 
Hence I think this question is wrong.

Other Related Questions on trigonometry

question mark
In ABC, if cot A+cot B+cot C = cosecA cosecB cosecC, then prove that ABC is right angle triangle.
trigonometry
1 Answer Available

Last Activity: 3 Years ago

question mark
  • Find the general solution of equation tan3∂=cot2∂
For all angles between -720 and +720
trigonometry
1 Answer Available

Last Activity: 4 Years ago

question mark
To prove : Cosec(45 degree - A)Cosec(45 degree + A) = 2SecA
trigonometry
1 Answer Available

Last Activity: 4 Years ago

question mark
Derive a formula for the area of the triangle, given b, A, B, and C. That is, derive the formula: (b^2sinAsinC)/(2sinB)
trigonometry
1 Answer Available

Last Activity: 4 Years ago

question mark
WHAT IS THE LIMIT WHEN X TOWARDS TO 0 OF sin6x/5x ? lim𝑥→0 𝑠𝑖𝑛6𝑥/5𝑥 
trigonometry
1 Answer Available

Last Activity: 4 Years ago