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2 years ago

How to do Algebraic expressions

Mathematics

1 answer:

krek1111 [17]2 years ago

5 0

use multiplication, division, addition, and subtraction to isolate the variable, and solve for X.

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Prove the trigonometric identity

Annette [7]

Answer:

Proved See below

Step-by-step explanation:

Man this one is a world of its own :D Just a quick question are you a fellow Add Math student in O levels i remember this question from back in the day :D Anyhow Lets get started

For this question we need to know the following identities:

$1+tan^{2}x=sec^2x\\\\1+cot^2x=cosec^2x\\\\sin^2x+cos^2x=1$

Lets solve the bottom most part first:

$1-\frac{1}{1-sec^2x} \\\\$

Take LCM

$1-\frac{1}{1-sec^2x} \\\\\frac{1-sec^2x-1}{1-sec^2x} \\\\\frac{-sec^2x}{1-sec^2x} \\\\\frac{-(1+tan^2x)}{-tan^2x}$

now break the LCM

$\frac{-1}{-tan^2x}+\frac{-tan^2x}{-tan^2x}\\\\\frac{1}{tan^2x}+1\\\\cot^2x+1$

because 1/tan = cot x

and furthermore,

$cot^2x+1\\cosec^2x$

now we solve the above part and replace the bottom most part that we solved with $cosec^2x$

$\frac{1}{1-\frac{1}{cosec^2x} } \\\\\frac{1}{1-sin^2x} \\\\\frac{1}{cos^2x}\\\\sec^2x$

Hence proved! :D

4 0

2 years ago

I NEED THIS PLEASE EXPERS.

kipiarov [429]

Answer: The answer is 24 :)

Give brainlest if I’m right

7 0

2 years ago

Read 2 more answers

How can you use two-way tables to solve for probabilities?

Alona [7]

Answer:

A two-way table is a way to organise data about two specific variables. This example shows a two-way table where the variables are gender and favourite sport.

Step-by-step explanation:

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2 years ago

Simplify 8(x-3)-4(2x-7)

Paraphin [41]

Answer:

Your solution is 4.

Step-by-step explanation:

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2 years ago

Adriana uses 1 1/4 cups of pretzels for every 1/2 cup of raisins when making a snack mix. What is the number of cups of pretzels

Naya [18.7K]

22/4 cups. 1/2 times 2 is 1 cup. 11/4 times 2 is 22/4

4 0

2 years ago