If cosec B=32\text{cosec B} = \frac{\sqrt{3}}{2} and A+B=90∘A + B = 90^\circ, then the value of sec A is :

Answer: The problem statement contains an invalid value for cosec B, as 32≈0.866\frac{\sqrt{3}}{2} \approx 0.866, which is less than 1. The cosecant of a real angle must be greater than or equal to 1 or less than or equal to -1. Therefore, no real angle B exists for which cosec B=32\text{cosec B} = \frac{\sqrt{3}}{2}.

Step-by-step solution

Step 1: Analyze the given information

We are given the value of cosec B and a relationship between angles A and B. We need to find the value of sec A.

Step 2: Determine angle B

The cosecant function is the reciprocal of the sine function. Therefore, if cosec B=32\text{cosec B} = \frac{\sqrt{3}}{2}, then sin⁡B=23\sin B = \frac{2}{\sqrt{3}}. However, the sine of any real angle must be between -1 and 1, inclusive. Since 23≈1.1547\frac{2}{\sqrt{3}} \approx 1.1547, which is greater than 1, there is no real angle B for which sin⁡B=23\sin B = \frac{2}{\sqrt{3}}. This indicates an issue with the problem statement.

More from this chapter

All Introduction to Trigonometry solutions →

Solve your own maths question free →