Question

If cot A =4/3 ,find the value of cos square A - sin square A?

Answer 1

Answer:

cot A=4/3

cos^2A-sin^2A ---- EQ 1

then

4^2-3^2

=16-9

=7

Step-by-step explanation:

we know

cot A=cosA/sinA

and

cotA=4/3 given

i.e

value of

cosA= 4

sinA= 3

now putting values of cosA ans sinA in the eq1