contestada

Select the correct answer.
Which expression gives the area of triangle QRS?
s
15
20°
R
9
O A £19)(15)cos(209)
O B. (11)(15)cos(209)
oc. (9)(15)sin(20°)
OD. £(11)(15)sin(209)

Select the correct answer Which expression gives the area of triangle QRS s 15 20 R 9 O A 1915cos209 O B 1115cos209 oc 915sin20 OD 1115sin209 class=

Respuesta :

Area of ΔQRS is 1/2×9×15×sin20° which is correct option (C)

What is area of triangle?

Area of triangle is half the product of any two sides and the sine of the included angle.

Area = 1/2.ab.sinC

Area of ΔQRS = 1/2×9×15×sin∅

∵ ∅ = 20°

Area of ΔQRS = 1/2×9×15×sin20°

Hence, area of ΔQRS is 1/2×9×15×sin20°

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