# trig

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verify the identity:

tan^2x(1+cot^2x)=1/1-sin^2x

Verify the Id:
tanx + cotx/ tanx-cotx = (1/sin^2x-cos^2x)

• trig -

(s^2/c^2)( 1+ c^2/s^2) = ? 1/(1-s^2)

s^2/c^2 + 1 = ? 1/(c^2)

(s^2+c^2)/c^2 = = ? 1/(c^2)

1/c^2 = 1/c^2

• needs parentheses -

tanx + cotx/ tanx-cotx = (1/sin^2x-cos^2x)

I can not tell what the numerators and denominators are.

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