If COS A=2/5,find the value of 4+4tan^2A
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The answer of , 4 + 4tan ^2 A = 25
Harsha653:
its wrong
??
its right...
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2
b/h = 2/5
4+4(p/b)^2 A
4+4(√21/2)^2
4+4(21/4)
4+21=25
4+4(p/b)^2 A
4+4(√21/2)^2
4+4(21/4)
4+21=25
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