Question

answers
2. cos A =21/29 , sin A = 20/29

3. cos A = 4/5 , tan A = 3/4

4. sin B = 2 root 2/3 , tan B = 2 root 2 , cos B = 1/2 root 2 , sec B = 3 , cosec B = 3/2 root 2

5. cos A = 12/13 , tan A = 5/12
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Answer 1

we should know formula

tana=opposite side/adjacent side

sina=opposite side/hypotenuse

cosa=adjacent side /hypotenuse

hypotenuse*2=opposite side*2+ adjacent side*2

u can do this by substiting

tana=20/21

from above opposite side=20

adjacent side =21

hypotenuse*2=20*2+21*2

=400+441

hypotenuse*2=841

hypotenuse=√841

hypotenuse=29

do the above by using same formula which is highlighted

it improves ur accuracy if u practice

Answer 2

Hey friend, your answers are in the attachment........

Hope it helps you......

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