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If sin A = 3/4 find the value of tan A |
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Answer» Step-by-step explanation: Answer Given, sinA= 4 3
⇒ DC BC
= 4 3
⇒BC=3k and AC=4k where K is the constant of proportionality. By Pythagoras theorem, we have AB 2 =AC 2 −BC 2 =(4k) 2 −(3k) 2 =7k 2
⇒AB= 7
k So, COSA= AC AB
= 4k 7
k
= 4 7
And tanA= AB BC
= 7
k 3k
= 7
3
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