evaluate cos70/sin20+cos57 cosec33-2cos60
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heya friend ✔
it's easy......
.--------------
From given..
cos70°/sin20°+cos57°*cosec33°-cos60°
=>cos70°/sin(90°-70°)+cos57"*cosec(90°-57°)-cos60°
=>cos70°/cos70°+cos57°*sec57°*cos60°
=>cos70°/cos70°+cos57°*1/cos57°*cos60°
=>1+1-1/2
=>2-1/2
=>3/2 Ans...
hope it help you.....
@Rajukumar.........☺your brainly star.
it's easy......
.--------------
From given..
cos70°/sin20°+cos57°*cosec33°-cos60°
=>cos70°/sin(90°-70°)+cos57"*cosec(90°-57°)-cos60°
=>cos70°/cos70°+cos57°*sec57°*cos60°
=>cos70°/cos70°+cos57°*1/cos57°*cos60°
=>1+1-1/2
=>2-1/2
=>3/2 Ans...
hope it help you.....
@Rajukumar.........☺your brainly star.
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