Question

solve thes please...​

Answer 1

6i)

Step-by-step explanation:

since sin^2 A=cos^2 (90-A)

cos^2 26 = sin^2 (90-26)=sin^2 64

Again

sin26 =cos 64 [ sin a=cos(90-a)]

therefore cos 64 sin26 =cos^64

tan a=cot (90-a)

then tan36 = cot54

therefore tan36/cot54=tan36/tan36=1

lastly ,

cos^26 +cos64sin26+tan36/cot54

= sin^2 64 +cos ^2 64 +1

[since sin^2 a +cos ^2 a =1 ]

1+1

2