Question

evaluate : 5(sin²45 + cos²45 ) -2(tan²45+cot²45)​

Answer 1

Answer:

HELLO EVERYONE

5(sin²45°+cos²45°) - 2(tan²45°+cot²45°)

we have,

sin45°=1/√2

cos45°=1/√2

tan45°=1

cot45°=1

put all the values in the given question.

we get,

5{(1/√2) ²+(1/√2) ²} - 2{(1) ²+ (1) ²}

5{1/2+1/2} - 2{1+1}

5{1} - {2}

5 - 2

3

I HOPE ITS HELPFUL FOR YOU.

☺