Question

Cos72*/sin18* + sin11*/cos79* - tan15*tan75*

Answer 1

Answer:

1

Step-by-step explanation:

=Cos72 /cos(90-18) +cos(90-11) /cos79 -tan 15 *cot (90-75)

=Cos 72/cos 72 +cos 79/ cos79- tan 15* tan 15

=1+1-1

= 1

Hope the answer is right

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Answer 2

Answer:

1 is the answer

Step-by-step explanation:

cos72°/sin18°=1

sin11°/cos79°=1

tan75°=cot15

so tan15°tan75°=tan15°*cot15°=1

Cos72*/sin18* + sin11*/cos79* - tan15*tan75* = 1+1-1

=1

hope it helps....