Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 1,062

If

is acute and , then find the value ofoptions are:-

A)

B)

C)

D)

*Last edited by niharika_kumar (2014-01-25 21:06:28)*

friendship is tan 90°.

Offline

**bob bundy****Administrator**- Registered: 2010-06-20
- Posts: 8,337

hi Niharika

You can use these trig formulas:

and

But first you'll need cos beta

Oh yes , and one more thing ... x5 and /5 so that you make fractions thus: 3/5 and 4/5.

Bob

Now to look at the second one.

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline

Pages: **1**