They should be written with the degree sign, unless the angles are measured in radians, but in that case you will nearly always be given multiples of .
3) Assuming the angles are measured in degrees...
where
.
Hi, I am stuck these types of questions and I just can't make any sense of them.
Do I apply compound angles or double angles or the simple trigno functions?
Kindly show me a few steps and I will take it from there.
Q) Find all the angles between 0 and 360 which satisfy the following equations:
1)
2)
3)
Another question is that when they say sin40 or sin10+40, the 40,10 and 40 are all angles right, even if they don't write the degree sign on them?
Thanks!
They should be written with the degree sign, unless the angles are measured in radians, but in that case you will nearly always be given multiples of .
3) Assuming the angles are measured in degrees...
where
.
(2)
That can be evaluated and you can finish with the identity
to get a quadratic equation in tanx......
if you want some practice,
though that identity is used to discover tan2x from tanx.
Instead just take the inverse tan of both sides to get 2x between 0 and 720 degrees.
Since tan(angle) is the slope of a line, remember there is a second solution 180 degrees away
from the solution returned by a calculator.