#need help in trigonometry
5 messages · Page 1 of 1 (latest)
You just need to group terms.
24.
6sin(x)cos(x) - 6cos(x) - 5sin(x) + 5 = 6cos(x)(sin(x) - 1) - 5(sin(x) - 1) = (6cos(x) - 5)(sin(x) - 1)
So, the equation becomes:
(6cos(x) - 5)(sin(x) - 1) = 0
That is easy to solve.
Same thing can be done in 25.