Math Problem Statement

if the value of log2(sin(theta)) = -2 then the value of log2(csc(theta)) is

Solution

We are given that:

log2(sin(θ))=2\log_2(\sin(\theta)) = -2

To find the value of log2(csc(θ))\log_2(\csc(\theta)), let's proceed step by step:

Step 1: Solve for sin(θ)\sin(\theta)

We can rewrite the logarithmic equation:

log2(sin(θ))=2    sin(θ)=22=14\log_2(\sin(\theta)) = -2 \implies \sin(\theta) = 2^{-2} = \frac{1}{4}

Step 2: Express csc(θ)\csc(\theta)

Recall that csc(θ)=1sin(θ)\csc(\theta) = \frac{1}{\sin(\theta)}, so:

csc(θ)=114=4\csc(\theta) = \frac{1}{\frac{1}{4}} = 4

Step 3: Find log2(csc(θ))\log_2(\csc(\theta))

Now, we find log2(csc(θ))\log_2(\csc(\theta)):

log2(csc(θ))=log2(4)\log_2(\csc(\theta)) = \log_2(4)

Since 4=224 = 2^2, we have:

log2(4)=2\log_2(4) = 2

Thus, the value of log2(csc(θ))\log_2(\csc(\theta)) is:

2\boxed{2}

Would you like a more detailed explanation of any step? Here are some related questions to expand your understanding:

  1. What is the relationship between sin(θ)\sin(\theta) and csc(θ)\csc(\theta)?
  2. How do you convert between logarithmic and exponential forms?
  3. What are the properties of logarithms that help in solving equations like this?
  4. What is the general approach to solving logb(x)=c\log_b(x) = c?
  5. How can we use identities involving trigonometric functions and logarithms?

Tip: Always remember that the cosecant function is the reciprocal of the sine function, which often helps when switching between the two!

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Logarithms
Trigonometric Functions
Reciprocal Functions

Formulas

log_b(x) = c implies x = b^c
csc(θ) = 1/sin(θ)
log_b(x^n) = n * log_b(x)

Theorems

Properties of Logarithms
Reciprocal Identity in Trigonometry

Suitable Grade Level

Grades 9-11