i am trying to workout part (ii) illustrate your method
i already have done part (i)
(i) Express
in the format
=360-61.9 =
(ii) using your answer to part (i) solve
for
(illustrate your method)
any help much appreciated
i am trying to workout part (ii) illustrate your method
i already have done part (i)
(i) Express
in the format
=360-61.9 =
(ii) using your answer to part (i) solve
for
(illustrate your method)
any help much appreciated
Hello, decoy808!
This is how I would do it . . .i already have done part (i) . . . . but you didn't finish
(i) Express: . in the format:
We have: .
Multiply by
Let be in a right triangle with: .
. . Then: .
Then we have: .
From a Compound-Angle Identity: .
Since , then: .
(ii) Using your answer to part (i), solve: .
So we have: .
. . which becomes: .
Then: .
. . Therefore: .