13. If root3 tan theeta - 1 = 0, find the value of sin*2- cos*2theeta.
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Answer:
Heya mate you answer
rock in maths
Step-by-step explanation:
root3 tan theta=1
tan theta=1/root3
theta=30degree
now
sin2theta -cos2theta
=sin (2x30)-cos (2x30)
=sin60-cos60=root3/2-1/2=(root3-1)/2
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