Math, asked by safinbenny4, 2 months ago

1
cota (90°-0)
112. Prove that
tan20-1
112 The nolueofc2260
cosec29
+
sec20-cosec20
ton2760
sin28-cos20​

Answers

Answered by ysgeneral891
2

Answer:

I think so your question is wrong....

Answered by snigdhasen723
1

Step-by-step explanation:

Given expression is

sin20

3

cos20

1

=2(

sin20

3

/2

cos20

1/2

)

=2(

sin20

sin60

cos20

cos60

)

=2(

sin20

cos20

sin60

cos20

−cos60

sin20

)

=2(

sin20

cos20

sin(60

−20

)

)

=2

sin20

cos20

sin40

=2×

sin20

cos20

2sin20

cos20

=4

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