If cos(
4
π
)−tan(
4
π
)=x, then x is:
- A2
3
3
+4
- B2
2
2
−1
- C2
1−
2
- D3
5
Solution & Step-by-step Explanation
Note:
4
π
radians is equal to 45
∘
.
We know the standard values:
cos(
4
π
)=
2
1
tan(
4
π
)=1
Substituting these values into the given equation:
x=
2
1
−1
x=
2
1−
2
4
π
radians is equal to 45
∘
.
We know the standard values:
cos(
4
π
)=
2
1
tan(
4
π
)=1
Substituting these values into the given equation:
x=
2
1
−1
x=
2
1−
2