Question

using the adjoining figure calculate the values of (1) cos theta (2) tan theta (3)cosec theta.. please solve this ...

Answer 1

Answer:

1. 9/15
2. 12/9
3. 15/12

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Answer 2

Answer:

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Correct option is

A

13

12

from the figure

△BCD is a right angled triangle with right angle at D

So BC

2

=CD

2

+BD

2

=3

2

+4

2

=5

2

⟹BC=5

Also △ABC is a right angled triangle with right angle at B

So AC

2

=BC

2

+AB

2

=5

2

+12

2

=13

2

⟹AC=13

So cosθ=

AC

AB

=

13

12