CBSE Class 10CBSE
Share
Notifications

View all notifications

Evaluate the Following Tan 45^@/(Cosec 30^@) + Sec 60^@/Cot 45^@ - (5 Sin 90^@)/(2 Cos Theta) - CBSE Class 10 - Mathematics

Login
Create free account


      Forgot password?

Question

Evaluate the Following

`tan 45^@/(cosec 30^@) + sec 60^@/cot 45^@  - (5 sin 90^@)/(2 cos theta)`

Solution

`tan 45^@/(cosec 30^@) + sec 60^@/cot 45^@  - (5 sin 90^@)/(2 cos theta)`   .....(i)

By trigonometric ratios we have

`tan 45^@ = 1       cosec 30^@ = 2    sec 60^@ = 2      cot 45^@ = 1    sin 90^@ = 1   cos 0^@ = 1`

By substituting above values in (i), we get

`1/2 + 2/1 - 5. 1/2`

-4/2 + 2 = -2 + 2 = 0

  Is there an error in this question or solution?

APPEARS IN

Solution Evaluate the Following Tan 45^@/(Cosec 30^@) + Sec 60^@/Cot 45^@ - (5 Sin 90^@)/(2 Cos Theta) Concept: Trigonometric Ratios.
S
View in app×