Pl help Q 17
Pl help Q 17 20
24.
obtuse yngle formed by medians drawn from the vertices of the acute angles of
an isosceles right-angled triangle is —
k
where k
In the median AD is perpendicular to AC. If b = 5 and c II, then — is equal to .
In a if a is the arithmetic mean and h, c are two geometric means between any two positive
sin• B•sin• C
is equal to .
sin Asin B sin C
2(TanA + Tano
-K then IKI
Given Ale = 2017 sin2B, and the value of
+ TanB+ Tanc
1-1 æptesents G.I.F
2
AB- BC -CA
= xy then the value of y-x =
In a triangle ABC if (ABC = and
The area of an a cute angle triangle ABC is , the area of its pedal triangle is 'P' where
2Nßp
The value of 8(cos2AcosB+cos2C) is
COSB and SinB =
AD-BE,CF are internal angular bisectors of A ABC and I is the incentre. If
IF = M abc, then the value of M is
In a triangle ABC 8b and = 2 LB. value of cosc —then K =
= — then —
= 3/ and cosB
14
Let a. b, c are the sides of such that b = 3, cos A 5
13
2 (a+b+C) then 2cosC =
