+91-93193 64476
FlagBACK
Flag Trigonometry> In triangle ABC if B is 30 and c is root ...
question mark

In triangle ABC if B is 30 and c is root b then A can be equal to

Rohan , 8 Years ago
Grade 9
anser 1 Answers
Arun
Dear Rohan
 
\text{HINT: Use }\cos30^\circ=\dfrac{c^2+a^2-b^2}{2ca}=\dfrac{(\sqrt3b)^2+a^2-b^2)}{2\cdot\sqrt3b\cdot a}
 
 
 
Hope Now you can solve this. If any problem occurs please feel free to ask.
Regards
Arun (askIITians forum expert)
 
Last Activity: 8 Years ago
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


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 tan3βˆ‚=cot2βˆ‚
For all angles between -720 and +720
trigonometry
1 Answer Available

Last Activity: 3 Years ago

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

Last Activity: 3 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 ? limπ‘₯β†’0 𝑠𝑖𝑛6π‘₯/5π‘₯ 
trigonometry
1 Answer Available

Last Activity: 4 Years ago