Tham KY's answer to Regina's Junior College 1 H2 Maths question.

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Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
1st
For your reference...
Regina
Regina
7 years ago
I do not understand the 3rd step..
Regina
Regina
7 years ago
The one in red words!
Tham KY
Tham KY
7 years ago
Are you able to get the final answer in exact integers? Without any rounding...
Regina
Regina
7 years ago
I can get -239 but idk how did u get j28560
Tham KY
Tham KY
7 years ago
If you could get the cos term, you should be able to get the sin term... Just change cos to sin...
Tham KY
Tham KY
7 years ago
Did you remember to times 13^4 to the sin term?
Regina
Regina
7 years ago
Oh yes i got the answer