le right angle triangle ABC, right angle is at CBC Com the finds and tan Discuss Discuss among your friends @ does

Question

le right angle triangle ABC, right angle is at CBC
Com the finds and tan
Discuss
Discuss among your friends
@
does exist for some value of anglex?
The value of an and cos A is always less than 1. Why
tan A is product of tan and A
There are the more ratios defined in trigonometry which are cons​

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Lyla 1 month 2021-08-21T23:00:15+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-08-21T23:02:11+00:00

    ANSWER

    By Pythagoras theorem,

    AB

    2

    =AC

    2

    +BC

    2

    ⇒AC

    2

    =AB

    2

    −BC

    2

    ⇒AC

    2

    =29

    2

    −21

    2

    =(29+21)(29−21)=50×8

    ⇒AC

    2

    =25×16

    ⇒AC=5×4=20 units

    ⇒cosθ=

    AB

    BC

    =

    29

    21

    ,

    sinθ=

    AB

    AC

    =

    29

    20

    ⇒sin2θ+cos

    2

    θ=

    29

    2

    21

    2

    +20

    2

    =

    29

    2

    29

    2

    =1

    ⇒cos

    2

    θ−sin

    2

    θ=

    29

    2

    21

    2

    −20

    2

    =

    841

    41

    .

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