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anonymous
 one year ago
FAN + MEDAL
Tangent is positive in quadrants I and IV only.
true or false?
anonymous
 one year ago
FAN + MEDAL Tangent is positive in quadrants I and IV only. true or false?

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Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2remember the \(\huge\color{ReD}{\rm CAST}\) rule

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and SOH CAH TOA \(\bf sin(\theta)=\cfrac{opposite}{hypotenuse} \qquad \qquad % cosine cos(\theta)=\cfrac{adjacent}{hypotenuse} \\ \quad \\ % tangent tan(\theta)=\cfrac{opposite}{adjacent}\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what about this one If cos Θ = negative two over five and tan Θ > 0, what is the value of sin Θ?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2dw:1438291452445:dw remember tan = sin over cos so if sin and cos are negative tan would be positive negative divide by negative = positive

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2for that one you need to draw a right triangle

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2now they gave you the hints: cos is negative and tan is greater than 0 so at which quadrant you should draw a right triangle ?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2look at the drawing in which quadrant cos is negative ?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2no that's not correct cos is negative in 2 quadrants

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2so cos is negative in 2nd and 3rd quadrant

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the answer is negative square root 21 over 5!!!

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2now given is tan>0 so as you can tan is negative in 2nd quadrant but positive in 3rd so you should draw a right triangle in 3rd quadrantdw:1438292353952:dw if you look at jdoe's comment *soh cah tah * rule cos = adjacent over hypotenuse now apply Pythagorean theorem to find 3rd side of right triangle

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2dw:1438292606283:dw sorry hypotenuse is 5 not the opposite side
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