trig question

[issa]

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Sin^2 @ (1+ Tan^2 @) = ??
@=theta
what formulas do we need to know to solve qustions like this??

 

[Liquidy Ice]

Sin^2 @ (1+ Tan^2 @) = ??
@=theta
what formulas do we need to know to solve qustions like this??

1+Tan^2@ = Sec^2@

Sin^2@*Sec^2@ = Tan^2@

 

[wireless_doc]

Sin^2 @ (1+ Tan^2 @) = ??
@=theta
what formulas do we need to know to solve qustions like this??

tan = sin/cos; sin^2 + cos^2 = 1
For the DAT, if you see tan, just replace by sin/cos. Trig questions are quite simple. No need to memorize derived formulas.

 

[adorable]

Sin^2 @ (1+ Tan^2 @) = ??
@=theta
what formulas do we need to know to solve qustions like this??

This is a step by step exp:
Sin^2 @ (1+ Tan^2 @) =
sin^2 @ (1+ [sin^2@/cos^2@])= trig id
sin^2 @ ([cos^2@/cos^2@] + [sin^2@/cos^2@])= get common denominator
sin^2 @ ([cos^2@ + sin^2@]/ cos^2 @)= add
sin^2 @ ( 1/ cos^2@)= pythagorean identity
sin^2 @ / cos^2@= trig id
tan^2 @


So, tan^2@ should be the answer

I hope this helps Issa 🙂 I am not good at trig. I had the same question yesterday and but the best teacher in the world helped me to understand it. Let me know if you need anymore help.
And thank you to all the SDNers for helping others like me out. You are really appreciated 😍