Math, asked by na9ndaTaupol, 1 year ago

When solving for angle x , in trigonometry, if the angle is pi/3, and we know that it is in the 2nd quadrant, which is the correct angle? cos (pi/2+pi/3) or cos (pi-pi/3)...

Answers

Answered by rdahin

0

cos (pi-pi/3)...
because Cos(90-A)=SinA

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