in Q 19, u have to find an angle between 0 and 180 for which cosine of that angle = 0.5. for that u have to find shift cos (0.5) .. then u vl get the answer 60 degree in question number 20 also do the same shift sin(1) = 90 degree
in question no 6, u have to find the horizontal distance draw a triangle in which height is 25m and angle between the horizontal and the hyp is 6 degree. then for the given angle 25 is the opposite side and horizontal is the adjacent use tan to find the horizontal
in question 7, draw a right angle triangle in which the height of the wall is 4.2m and the hyp (that is the length of the ladder) is 5m. we have to find the angle between the ladder and the wall. for this angle , 5m is the hyp and 4.2m is adjacent side. use cosine to find this angle
teacher in question 10 we have to find the opp or the hyp ? i got confused because the question is to find how far the out the sea is the boat so the hyp right ??
study everything except 8 and 16
ReplyDeleteSo 8 and 16 won't be included as part of the exam portions??
Deleteyes
DeleteGood....done well
ReplyDeleteMiss i didnt understand the last two questions ! (19 and 20 )
ReplyDeletein Q 19, u have to find an angle between 0 and 180 for which cosine of that angle = 0.5.
Deletefor that u have to find shift cos (0.5) ..
then u vl get the answer 60 degree
in question number 20 also do the same
shift sin(1) = 90 degree
clear or not?
DeleteClear thanks .. and also question 18 Please
ReplyDeletesorry ..there is a correction in question 18...its not sine of angle , its cosine of angle
DeleteMiss can you say me how to do Q 6 and 7 with steps
ReplyDeleteclear?
DeleteThis comment has been removed by the author.
ReplyDeletein question no 6, u have to find the horizontal distance
Deletedraw a triangle in which height is 25m and angle between the horizontal and the hyp is 6 degree.
then for the given angle 25 is the opposite side and horizontal is the adjacent
use tan to find the horizontal
in question 7,
ReplyDeletedraw a right angle triangle in which the height of the wall is 4.2m and the hyp (that is the length of the ladder) is 5m.
we have to find the angle between the ladder and the wall.
for this angle , 5m is the hyp and 4.2m is adjacent side.
use cosine to find this angle
teacher in question 10 we have to find the opp or the hyp ? i got confused because the question is to find how far the out the sea is the boat so the hyp right ??
ReplyDeleteboat and sea will be on the same line ..right?
Deleteif it is hyp boat should be above sea, like an aeorplane, which is not possible.
so here it is
so here it is the adjacent
DeleteLol so easy hard but easy without fun with Very Hard questions
ReplyDelete