Year 12s: what will be the first way you research your future options? >>

Year 12s: what will be the first way you research your future options? >>

Year 12s: what will be the first way you research your future options? >>

C3 Q (I think, it's not for me)

Bit confused about this one. Bit o' help required for a friend (haven't done maths in a long long time :\)

PROVE

sec(theta) - cos(theta) = sin(theta)tan(theta)

NikolaiJ

Bit confused about this one. Bit o' help required for a friend (haven't done maths in a long long time :\)

PROVE

sec(theta) - cos(theta) = sin(theta)tan(theta)

secθ - cosθ
= 1/cosθ - cosθ
= (1 - cos²θ )/cosθ
= sin²θ/cosθ
= sinθ x sinθ/cosθ
= sinθtanθ

OP

Cheers mate, v helpful. My skills are weak.

Looks like my Maths class are two chapters behind, although we're doing M1 simultaneously :smile:

:smile:

OP

It's my friend. She's doing A2 now, I finished my A level this summer. Got a B, just don't remember much about it now a days.

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