Question

@ Without using Trigonometria Table, find the value of
Ans:=1
COS70° ÷ sin20° + Cas57° Cosec33° -2 Cos60°​

Answer 1

Answer:

ANSWER IS 1

cos(70)/sin(20) + cos(57)×cosec33 - 2cos(60)

using the identity cos(Q)=sin(90-Q)

we get

sin(90-70)/sin(20) + sin(90-57)×cosec(33)-2cos (60)

sin(20)/sin(20) + sin(33)cosec(33) - 2 cos(60)

= 1+1-2 × 1/2. (cos(60)=1/2)

=1

Answer 2

hey frnd ❤️❤️

pls refer to the attachment