In the figure, '/_\ B=50^circ, /_\ ADC=135^circ' 'A B=10' centimetre. 'B C=25' centimetre.
`(##VPU_TTT_MAT_X_P01_C05_E14_004_Q01##)`
a) What is the area of the triangle 'ABC' ?
b) Find the length of DC.
'(sin 50^circ=0.77, cos 50^circ=0.64, tan 50^circ=1.19)'

ln triangle A B C , A B=7 cm, B C=12 cm, /_ B=40^circ a) Find the area of the triangle. b) Calculate the length of AC.

In the figure, BC =14, /_B = 40^@ , /_C = 50^@ Find the area of triangle ABC.

A boy standing on the top of a tower 20 metrés height, saw the top of a building at an elevation of 50^circ and its base at a depression of 30^circ a) Draw a rough figure. according to the given data. b) find the distance between the tower and the building. c) find the distance from the top of the tower to the base of the building. d) find the height of the building. [sin 50^circ =0.77, cos 50^circ =0.64, tan 50^circ =1.2, 'sqrt3 =1.7]