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Show that (sec(x))^2 /(sec(x)+1)(sec(x)-1) can be written as (cosec(x))^2.

( sec2(x))/((sec(x)+1)(sec(x)-1))Then, by the rule of 'difference of two squares', we know that this equals= (sec2(x))/(sec2(x)-1)= (sec2x/tan2x)s...

RS
Answered by Rishi S. Maths tutor
11730 Views

Descrivi la tua famiglia

The question can be approached in several ways. I personally find useful to have a general idea of the answer as a whole in my head before starting to speak out loud. The trick is to not get lost in your ...

FR
Answered by Federica R. Italian tutor
3503 Views

Talk about a topical social issue affecting Russia or a Russian-speaking country today.

This question demands a topical issue such as the dangers of alcoholism or drug abuse. I would encourage the student to thoroughly learn topical vocabulary and help them to devise techniques, such as flas...

LM
Answered by Lia M. Russian tutor
1413 Views

Work out ∛16 as a power of two. (AQA GCSE Higher paper 2017, Q24b)

When you're working with fractional indices, I find the following rhyme really useful:"Fractional indices are like a flower: the bottom's the root, the top's the power".We have a cube root <...

RD
Answered by Ruth D. Maths tutor
21519 Views

Two apples and three bananas cost a total of £1.30. Seven apples and one banana cost a total of £1.70. Find the cost of a) one apple and b) one banana.

First, look at the key information from the question and form an equation for each of the first two sentences. These equations are as follows (let a represent the number of apples and b represent the numb...

JS
Answered by James S. Maths tutor
16791 Views

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