Question

FAN MEDAL WITH BE GIVEN
Benchmark sohcotah
The picture shows a triangular island:

Answer 1

Which expression shows the value of c?

Answer 2

do u know the difference between the two functions, cos and tan, shown in the choices?

Answer 3

yes Tan is opp/adj , Sin is Opp/Hyp, and Cos is adj/hyp

Answer 4

@Aizhalee GREAT :) so u need to find c - which is opp, adj or hyp for the 45deg angle?

Answer 5

c is hypotenuse, b is adj and a is opp

Answer 6

good good good...now here is the tricky part: do u know what the sum of all angles in a triangle is?

Answer 7

30+60 something like that ? @sdfgsdfgs

Answer 8

well yes...sort of....the sum of all angles in a triangle is 180. So in this case, u know one is 90 and the other is 45....what is the third angle equal to?

Answer 9

45

Answer 10

@sdfgsdfgs am i right or wrong :(

Answer 11

dont worry @Aizhalee u are doing G8 :P

n we are almost there....

so using the "other" 45 deg. angle, write out cos45 = ? / ?

Answer 12

cos45 b/c

Answer 13

yes cos 45=b/c

but thats not one of the choices....so lets try out the other 45 angle okay?

Answer 14

ok.

Answer 15

what is cos45 = ? / ? then