
Trigonometric ratios of ratios like sine, cosine, tangent, cotangent, secant, and cosecant are beneficial in solving and dealing with the length and angles of a right-angled triangle. Some typical values of trigonometric functions that help us in solving the trigonometric problems are 0°, 30°, 45°, 60°, and 90°.
The three major ratios are sin, cos and tan.
Similarly, by reciprocating them, we get Sec, Cosec and Cot ratios.
Since they are reciprocal of each other, they cancel each other out when, multiplied together
|
Angle (in degree) |
0° |
30° |
45° |
60° |
90° |
|
Angle (in radian) |
0 |
π /6 |
π /4 |
π /3 |
π /2 |
|
Sin θ |
0 |
½ |
1/√2 |
√3/2 |
1 |
|
Cos θ |
1 |
√3/2 |
1/√2 |
½ |
0 |
|
Tan θ |
0 |
1/√3 |
1 |
√3 |
∞ |
|
Cot θ |
∞ |
√3 |
1 |
1/√3 |
0 |
|
Sec θ |
1 |
2/√3 |
√2 |
2 |
∞ |
|
Cosec θ |
∞ |
2 |
√2 |
2/√3 |
1 |
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