pls answer my problem
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Answer:
i) sinA= 4/5
ii) cosA= 3/5
iii) tanA= 4/3
iv) sin^2A+cos^2A=1
Step-by-step explanation:
i) sec A= hypotenuse/addjacent= 5/3
opposite=√(5^2-4^2)= √16= 4
so, sinA= opposite/hypoteneous= 4/5
ii) cosA= addjacent/ hypotenous= 3/5
iii) tanA= opposite/addjacent= 4/3
iv) (sinA)^2+ (cosA)^2= (4/5)^2+ (3/5)^2= (16/25)+(9/25)=1
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