Question

please tell 11 answer urgently​

Answer 1

Answer:

answe b is correct.

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Answer 2

Answer:

b

Step-by-step explanation:

given cosA=4/5

sinA=√1- cos2A I. e. square root of 1-cos square A

because sin2A+cos2A =1

sinA= √1-(4/5) 2

=√1-(16/25)

=√25-16)/25

=√9/25

sinA= 3/5

therefore,

TanA= sinA/cosA

= 3/5/4/5

TanA = 3/4