Math, asked by maxten852, 1 year ago

Sometimes in trigonometry we multiply numerator and denominator by any number how to find the number?I know that it is according to question but pl explain with example .

Answers

Answered by lodhiyal16
0

Answer:

Explained

Step-by-step explanation:

You can use either reciprocal or ratio identities, depending on which side you are going to work on. Here is an example

Sin Ф / cosФ + cosФ/sinФ =cosecФ secФ

To get common denominator multiply both terms on the left by fraction equal to  1

sin Ф/cosФ * sinФ/sinФ + cosФ /sin Ф * cosФ /cosФ =cosecФ secФ

sin²Ф/cosФsinФ + cos²Ф/sinФcosФ= cosecФ secФ

sin²Ф +cos²Ф/cosФsinФ=cosecФ secФ

1/ cosФsinФ = cosecФsecФ

Use reciprocal identities on the denomination

i/1/secФ*1/cosecФ = cosecФsecФ

secФcosecФ = cosecФsecФ

Explained, Hope it will helpful for you to understand the concept

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