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Question

Match the following:

1. sin(90A) a) cosecA2. tan(90A)b) cotA 3. sec(90A) c) cosA


A

1- c; 2 - b; 3 - a

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B

1 - a; 2 - b; 3 - c

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C

1 - a; 2 - c; 3 - b

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D

1 - b; 2 - c;3 - a

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Solution

The correct option is A

1- c; 2 - b; 3 - a



In the right triangle ABC, right angled at B;

As, sum of all the angles of a triangle =180

We have, A+C=90

C=90A

cosA=ABAC=sinC=sin(90A)

cosecA=ACBC=secC=sec(90A)

cotA=ABBC=tanC=tan(90A)


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