Posted by benjieo on Wednesday, May 14, 2014 at 6:40am.
In a triangle PQR. Q=8cm , R=6cm . Cosp=1/12.calculatethe value of p

maths  MathMate, Wednesday, May 14, 2014 at 6:44am
I think you mean:
In a triangle PQR. q=8cm , r=6cm . Cos(P)=1/12. Calculate the value of p.
where capital letters mean vertices, lowercase letters mean lengths of sides opposite the corresponding vertex.
Use cosine rule:
p²=q²+r²2qr(cos(P))
and solve for p.
Answer This Question
Related Questions
 Maths  If two sides of a triangle are 6cm and 8cm respectively. What can be the...
 mathsgeomtery  draw a scelene triangle ABC with AB=6cm, BC=9cm and CA =8cm. ...
 8th Grade PreAlgebra  Triangle PQR is transformed to triangle P'Q'R'. Triangle...
 Algebra  In triangle PQR shown, point S (not shown)is on QR between Q and R. ...
 maths  In triangle PQR QM perpendicular to PR, RN perpendicular to PQR, H is ...
 maths  In triangle PQR QM perpendicular to PR, RN perpendicular to PQR, H is ...
 Area of a triangle  In Triangle ABC b=6cm c=8cm and angle A=60 find the area of...
 geometry  A triangles shows the altitude qt and pm of triangle pqr. If qr=8cm...
 Mathematics  What is the perimeter of a triangle of length 6cm, 8cm, 10cm?
 math  construct a triangle ABC similar to given triangle equilateral triangle ...
More Related Questions