Question

please help, The picture shows a triangular island.
Which expression shows the value of q?
A. r cos 55° , B. r sin 55°, C. s/sin55°, D. s/cos55°

Answer 1

do you know the definitions of sin and cos ratios ?

Answer 2

sin opposite/hypot.
cos adj/hypot. ?

Answer 3

correct!
so, can u find
sin 55 and cos 55 ?

Answer 4

what is adjacent side of 55 degree angle
what is hypotnuse
and what will be cos 55 then ?

Answer 5

adjacent is s, hypotnuse is q, so s/q

Answer 6

good!!
cos 55 = s/ q

so, q =.... ?

Answer 7

cos 55 times s?

Answer 8

not actually,
first multiply 'q' on both sides, what u get ?

Answer 9

s divided by cos 55 ?

Answer 10

correct! :)

Answer 11

yay thank you!

Answer 12

welcome ^_^